Showing posts with label Brazil. Show all posts
Showing posts with label Brazil. Show all posts

Tuesday, August 4, 2026

Controversial markets, black markets, and market design (in Brazil)

 Below is a Youtube video of all the talks given at the 4th International Workshop on Game Theory and Economic Applications at the University of São Paulo last Wednesday.

My talk, whose title was "Controversial markets, black markets, and market design"  is introduced at minute 2:24 (and for some of you the link below should start up there). The talk before mine is by Bob Wilson, and the one after by Paul Milgrom, but the video camera was on all the time, so you have to scroll to get to the actual talks.)

 

My talk begins with some general discussion of how market design and engineering economics are related to game theory. Then I introduce kidney exchange as the talk's main example, and discuss some of the accompanying controversies, including those currently being encountered in Brazil.

Monday, July 27, 2026

Multi-hospital kidney exchange in Brazil

An article in Floha de S. Paulo, tells of the first inter-hospital kidney exchange in Brazil:

 Transplante renal pareado amplia opção para pacientes que têm doador, mas não podem receber o rim  by Claudia Collucci

English translation:
Paired kidney transplant expands options for patients who have a donor but can't receive the kidney

Article summary: 

For the first time in Brazil, two transplant centers in different cities carried out a paired kidney donation — swapping incompatible living donors so each recipient gets a compatible kidney from someone else's donor instead. The initiative was led by Hospital das Clínicas at USP's medical school (HCFMUSP) in São Paulo and Santa Casa de Juiz de Fora in Minas Gerais.

The surgeries happened simultaneously at both hospitals — a donor from São Paulo traveled to Juiz de Fora to donate to the Minas Gerais recipient, while the donor from Minas Gerais went to Hospital das Clínicas in São Paulo to donate to the São Paulo patient. 

the two hospitals use an internationally developed (U.S.-built) platform that cross-references immunological traits, body size, and donor kidney quality to identify the best-matching combinations — this is functionally the same kind of algorithm we've been discussing with NKR.

Brazil has no specific regulation for paired kidney donation under its National Transplant System, so the procedure currently proceeds only as research. 

 

HT: Dr. Gustavo Ferreira 

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Earlier:

Thursday, January 22, 2026

Kidney exchange in Brazil (a clinical trial)

Here's a video in which Mike Rees, the founder of the Alliance for Paired Kidney Donation (APKD) describes how (with the help of a grant from Stanford Impact Labs) the APKD is helping Brazilian transplant docs get kidney exchange going there. 

 Earlier:

Tuesday, February 27, 2024  Stanford Impact Labs announces support for kidney exchange in Brazil, India, and the U.S.

 Thursday, October 10, 2024  Kidney exchange in Brazil, continued (with pictures)

 

Sunday, July 26, 2026

Program for the Workshop on Game Theory and Economic Applications, São Paulo, July 26-August 2

 Here's a high level overview of the program, which begins today.

And here's the detailed day by day program

 I'm expecting to speak on Wednesday, which looks to be a busy day:

 

 

Saturday, July 25, 2026

4th International Workshop on Game Theory and Economic Applications, São Paulo, July 26-August 2

 My old friend, colleague and coauthor Marilda Sotomayor is presiding over a big game theory conference in São Paulo this coming week.

 Here are the first paragraphs of the announcement from the University of São Paulo:

USP brings together six Nobel laureates in Economics in an event on Game Theory

 The Faculty of Economics, Administration, Accounting and Actuarial Sciences of the University of São Paulo (FEAUSP) will host, between July 26 and August 2, 2026, the 4th International Workshop on Game Theory and Economic Applications (IWGTEA). The event, consolidated as one of the most important in the area, is organized by the renowned professor emeritus of FEAUSP, Marilda Sotomayor, a world authority in Theory of Matching Markets.

The workshop will bring together six Nobel laureates in Economics. In person, FEAUSP will receive Paul Milgrom (Nobel 2020), Roger Myerson (Nobel 2007) and Alvin Roth (Nobel 2012). Laureates Robert Aumann (Nobel 2005), Robert Wilson (Nobel 2020) and Eric Maskin (Nobel 2007) will participate online. It will be a rare opportunity to translate how seemingly abstract mathematical ideas influence markets, governments, and everyday decisions.

In addition to the Nobel laureates, the body of keynote speakers includes important names such as Gabrielle Demange (Paris School of Economics), Ehud Kalai (Northwestern University), Hervé Moulin (University of Glasgow) and the Brazilian Aloísio Araújo (IMPA/FGV). There will also be a plenary session with Professor Marilda Sotomayor, who shared with Alvin Roth, in 1990, the authorship of the book "Two-Sided Matching: A study in game-theoretic modeling and analysis".


 

Nobel Prize in Economics Alvin Roth and professor Marilda Sotomayor (FEAUSP)
Photo: personal archive
 

Unlike traditional congresses, the IWGTEA is structured as a "workshop and school", focusing on the training of new researchers. "The idea is aimed at the interaction of students with the most renowned researchers in game theory", explains Professor Marilda Sotomayor. According to her, the main objective is to provide students with direct contact with the minds that shaped the modern economy. The expectation is that the workshop will attract 250 participants with more than 100 students from different parts of the world. 

... 

 Conference location: Av. Prof. Luciano Gualberto, 908 - Butantã, São Paulo - SP, 05508-010 

Schedule: https://www.iwgtea.fea.usp.br/ 

 


 

Monday, March 9, 2026

Kidney exchange developments in India, Brazil, Saudi Arabia and Germany

 Here are recent reports on kidney exchange from  India, Brazil, Saudi Arabia and Germany.

 Atul Agnihotri: SOMETHING REMARKABLE IS HAPPENING IN KIDNEY TRANSPLANTATION IN INDIA.

"Through collaboration with 63 transplant centers, APKD India enabled 130 kidney swap transplants in 2025, quietly becoming ONE OF THE LARGEST KIDNEY SWAP PROGRAMS outside the U.S.

And the momentum continues — January has already kicked off with 22 swap transplants.

A powerful reminder that when hospitals collaborate, more patients receive the gift of life.

"One Nation, One Swap."

https://lnkd.in/gZD6Q-md "

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Here's an article on the clinical trials of kidney exchange in Brazil, in preparation for a possible change in the transplant law to make it standard practice. 

Doação Renal Pareada (DRP) no Brasil: relato do primeiro caso envolvendo três duplas    Kidney Paired Donation (KPD) in Brazil: first 3-way case report   by Juliana Bastos, Glaucio Silva de Souza, Marcio Luiz de Sousa, Pedro Bastos Guimarães de
Almeida, Thais Freesz, David Jose de Barros
Machado, Elias David-Neto, Gustavo Fernandes Ferreira   https://doi.org/10.1590/2175-8239-JBN-2025-0177pt

 Abstract: Kidney Paired Donation (KPD) is a transformative strategy in living kidney donor transplantation (LDKT), particularly for overcoming immunological barriers that preclude direct donation. In 2021, KPD accounted for one-fifth of adult LDKT and for half of LDKT for sensitized recipients in the United States. In Brazil, with a high prevalence of chronic kidney disease (CKD) and over 30,000 patients on transplant waiting lists, the demand for compatible donors far exceeds supply. This article presents a case report of KPD in the Brazilian context, illustrating its feasibility and highlighting challenges and considerations for broader implementation. The case demonstrates KPD’s potential to increase transplant rates, improve outcomes, and reduce dialysis costs. Nevertheless, structural, ethical, and regulatory challenges remain. This report emphasizes the implications of expanding KPD as a sustainable, life-saving strategy in Brazil.

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Here's a report from  King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia: 

Almeshari, K.A., Broering, D.C., Obeid, D.A., Alali, A.N., Algharabli, A.N., Pana, N.L. and ALI, T.Z., Innovative Strategies in Kidney Paired Donation: Single-Center Experience Achieving the Highest Annual Transplant Volume Globally. Frontiers in Immunology, 17, p.1623684. 

"Methods: We analyzed all kidney transplants performed through our KPD program between January and December 2024. The program aimed to achieve full HLA and ABO compatibility for incompatible pairs, while also incorporating additional strategies: inclusion of compatible pairs to improve HLA matching, acceptance of ABO quasi-compatible matches (e.g., A2 donors to O or B recipients), low-risk HLA-incompatible matching for HLA-incompatible candidates with cPRA >80%, and ABO-incompatible matching for those with cPRA >95%.

Results: A total of 135 patients (121 adults, 14 pediatrics) underwent KPD-facilitated transplantation, including 69 HLA-incompatible (51.1%), 37 ABO-incompatible (27.4%), and 29 compatible (21.5%) pairs. Females comprised 60.7% of the cohort, with a significantly higher proportion in the HLA-incompatible group (p < 0.001). HLA-incompatible recipients were older than others (mean age 42.5 years, p < 0.001). Most transplants (93.3%) occurred through 2- to 5-way closed chains, with the remainder via domino chains (6.7%). 

...

Conclusion: Our single-center experience demonstrates the feasibility and effectiveness of a high-volume KPD program in overcoming immunologic barriers to kidney transplantation. Strategic inclusion of compatible pairs, ABO quasi-compatible matching, low-risk HLA-incompatible, and ABO-incompatible matchings significantly increased access for difficult-to-match recipients. This model may serve as a replicable framework for other high-capacity transplant centers seeking to expand transplant access and improve outcomes for complex patient populations. "

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And here's a report on proposed German legislation to (finally) make kidney exchange legal in Germany: 

Biró, P., Budde, K., Burnapp, L., Cseh, Á., Kurschat, C., Manlove, D., & Ockenfels, A. (2026). Germany's Path to a National Kidney Exchange Program: An Assessment of the 2024 Legislative Proposal. Health Policy, 166, 105578. 

"Highlights

The German Federal Parliament plans to amend the Transplantation Act (1997).

The main goal of the reform is to establish a national kidney exchange program.

The draft law follows European best practices in many respects.

However, the law prohibits the participation of compatible donor–recipient pairs, contrary to international evidence.

Germany may join cross-border kidney exchange programs in the future. "

 

Thursday, January 22, 2026

Kidney exchange in Brazil (a clinical trial)

Here's a video in which Mike Rees, the founder of the Alliance for Paired Kidney Donation (APKD) describes how (with the help of a grant from Stanford Impact Labs) the APKD is helping Brazilian transplant docs get kidney exchange going there. 

 

Earlier:

Tuesday, February 27, 2024  Stanford Impact Labs announces support for kidney exchange in Brazil, India, and the U.S.

 

Thursday, October 10, 2024  Kidney exchange in Brazil, continued (with pictures)

 

 

Saturday, November 8, 2025

Game theory in Brazil, July 26-Aug2: Call for papers

 Marilda Sotomayor forwards the following call for papers:

Game Theory scholar. 
It is a great pleasure to invite you to participate in the 4TH INTERNATIONAL WORKSHOP ON GAME THEORY AND ECONOMIC APPLICATIONS, to be held at the University of São Paulo, from July 26 to August 2, 2026.
The workshop will offer the participants the opportunity to interact with some of the most prominent researchers in Game Theory. We expect to have over 340 participants, with a majority of young scholars and including 5 Nobel Laureates: Robert Aumann, Roger Myerson, Alvin Roth, Robert Wilson and Paul Milgrom. 
The week-long event will consist of minicourses, conferences and contributed papers sessions. The courses will start at an introductory level and will reach the frontiers of current research. Please direct questions to iwgtea2026@usp.br. 
To participate in the workshop, it is necessary to register on our website: https://www.iwgtea.fea.usp.br/, where you can also find more information on the conference. 
Limited financial aid for travel and accommodation expenses of up to 100 students or young researchers (who got his/her PhD in the last three years) will be provided. The candidate should refer to the information provided on our website. 
If you are interested in submitting a paper for presentation you should register on our website and submit it through the appropriate link. An extended abstract (up to 3 pages), or, if possible, a full paper, written in English, as well a short abstract (up to 200 words), are required. This paper will be made available for download on our website if your submission is accepted. Presentations should be made in English, the official language of the workshop. Acceptable formats for the files are PDF, PS and Word. Articles in all areas of Game Theory and its applications are welcome. 
 Please note that the deadline for paper submissions and remittance of the documents required to the young scholars is March 15, 2026. The selected candidates and articles will be announced by April 15, 2026. 
Early registration fee payment should be received by April 30, 2026. A late charge of 40% will be added after this date. Only those who have paid the registration fee by May 15, 2026, will be included in the program. The schedule of talks will be announced by the end of May.
We look forward to seeing you in São Paulo!
The Organizers
M. Sotomayor (USP), M. Bugarin (UNB), W. Maldonado (USP), R. Corbi (USP)

 

Thursday, October 10, 2024

Kidney exchange in Brazil, continued (with pictures)

 In August I posted about a trip to Brazil with Mike Rees where we traveled with Dr. Gustavo Ferreira, the director of transplantation at the hospital Santa Casa de Misericórdia de Juiz de Fora

Part of our trip was spent in the capital, Brasilia, talking to the government about extending Brazilian transplant law to allow kidney exchange, after which we went to Juiz de Fora.  Here's my blog post about that trip:  Kidney exchange in Brazil: prelude

That post concluded by saying "On Saturday we had an exciting finish to the trip, but it's not my story to tell yet, so I'll blog again after there is an official announcement."

Now Brazil's first three-way kidney exchange has been announced, as part of a clinical trial that I hope will help change Brazilian law to allow kidney exchange as a regular medical procedure.  The three donors and three recipients all did well, and left the hospital very shortly after the actual surgeries, but came back to tell their stories to the Brazilian news show Profissão Repórter (Professional Reporter). You can see the video here  https://globoplay.globo.com/v/12997336/

It's in Portuguese but you will quickly get the idea, presented even more briefly on Instagram by the transplant nephrologist Dr. Juliana Bastos here: https://www.instagram.com/reel/DA4JBVIsFta/?igsh=d2hnb3hoNjJxN2I4     where you can see the three incompatible patient-donor pairs rearrange themselves for the camera into the three-way exchange in which each patient received an organ from a compatible donor. (Dr. Bastos recently added a PhD to her MD, with a dissertation on kidney exchange.)

Here's another Instagram link to the video.

I had the privilege of observing parts of five of the six surgeries (three nephrectomies and three transplants), and some pictures are below.  

If someone directs a movie about this kind of transplant surgery, there will be two dramatic scenes, one in which the donated kidney is carried across the hall to the transplant operating room, and the second showing the moment the clamps are removed from the blood vessels of the transplanted kidney, so that it turns from grey to pink as blood returns to it. 

But here's a photo I took at  the start of what I think is the most dramatic moment of the surgery, as the artery from the kidney is just about to be connected to the artery of the recipient.

The artery from the donated kidney is the small white tube being pointed to by the instrument held in the fingers at the top right of the picture. Immediately in front of it--the long red tube--is the artery of the recipient, to which it must be connected so that blood can again flow to the kidney.  Notice that a small incision has already been made in the recipient's artery--this is where the two will be attached. The connection has to be perfect, so that the blood can flow without obstruction that could cause a clot.


The surgeon who first figured out how to do this kind of vascular surgery, Dr. Alexis Carrel, won the 1912 The Nobel Prize in Physiology or Medicine


I was able to follow the proceedings thanks to the running commentary offered to me by the Brazilian surgeons and by Mike Rees (who wasn't busy doing surgery). That wasn't the only kind of support Mike offered me in the OR (as I balanced on a pair of stools to better appreciate the commentary):



And here's a post-op picture of most of the big team that made it happen:


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Parabéns ao Gustavo e à Juliana! Congratulations. Your work and leadership can make a big difference not just to your patients, but to people all over Brazil.
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Earlier:

Monday, August 12, 2024

Monday, August 12, 2024

Kidney exchange in Brazil: prelude

 Yesterday I flew home from a busy visit to Brazil, with Mike Rees and Dr. Gustavo Ferreira.  




On Wednesday we all traveled to the capital, Brasilia, meeting with government ministries and agencies about how to move kidney exchange forward there.

Our most promising meeting on Wednesday was with the company that organizes the hospitals associated with Brazil's Federal universities. We talked about research possibilities

Wednesday Aug 7: Brazilian Hospital Services Company


Our most important meeting was on Thursday with the Ministry of Health  We talked about how clinical trials of kidney exchange in Brazil could help guide changes in Brazil's organ transplant laws and regulations.

Thursday: Brazil Ministry of Health, August 8 2024


On Friday we traveled to Juiz de Fora where we participated in a transplant symposium at the Santa Casa hospital there








On Saturday we had an exciting finish to the trip, but it's not my story to tell yet, so I'll blog again after there is an official announcement.


Earlier:

Sunday, June 2, 2024

Kidney Exchange in Latin America and the Caribbean

 Kidney exchange isn't yet thriving in Latin America, but the basic infrastructure is in place. It would make a lot of sense to jumpstart kidney exchange by allowing cross border exchange, so that there would be a large enough pool of patient-donor pairs to make finding a match easy. Here's an article surveying the member countries of the Latin America and Caribbean Transplant Society.

Bastos, Juliana, David José de Barros Machado, Raquel Megale Moreira, Gustavo Fernandes Ferreira, and Elias David-Neto. "Kidney Paired Donation in Latin America and the Caribbean: An Update." Transplantation 108, no. 6 (2024): 1257-1258.

"we assess the situation of KPD in the countries affiliated with the Latin America and Caribbean Transplant Society (STALYC).

  

"Guatemala was the first country to publish a scientific report on KPD in 2018,8 with 4 kidney paired transplants performed between 2010 and 2017.

"Two reports from Argentina on local news websites reported 2-way exchanges involving 2 pairs in 20159 and 2018.10

"Costa Rica published a 2-way exchange on the hospital’s social media page in 2016,11 whereas a 2-way exchange transplantation was performed in Brazil in 2020.12

"Mexico is leading the reported KPD activity with a first experience involving 4 pairs in a chain beginning with an altruistic donor13 reported in 2019. A more recent publication reported on 22 pairs transplanted with longer chains and excellent results.14

"It is interesting to note that there are 6 countries—Panama, Ecuador, Venezuela, Peru, Chile, and Paraguay—with laws explicitly permitting KPD. Thus far, there has not been a report on KPD in those countries, which is likely due to the relatively recent publication of these legislations, all of which occurred after 2010.

...

"A recent publication has shed light on the potential of KPD in low-to-middle income countries (LMICs), strongly advocating for the promotion and encouragement of KPD programs, including considerations of cost advantages.17 Of additional relevance, valuable recommendations on initiating KPD programs in LMICs include starting with smaller chains, considering simultaneous surgeries, and implementing effective organ transport strategies.17 By adopting these strategies, LMICs can address compatibility issues and enhance their organ transplantation capabilities.

"Considering that KT is the superior and more cost-effective treatment option for patients with CKD, it is puzzling that the initiation of KPD programs remains limited in a region primarily composed of LMICs. Although some countries may have implemented KPD programs without publication, genuinely active programs beyond Mexico remain missing. It is crucial to emphasize that in most of these countries, deceased donor transplantation also falls significantly short of estimated needs.3,7 The entire infrastructure surrounding transplantation, including both living and deceased donors, continues to require substantial improvements. Particularly for KPD, initiatives such as educational campaigns for physicians, recipients, and donors, as well as investments in logistics and software in addition to a legal framework, need to be encouraged. Similar to KPD programs in Europe,5,18 collaborative efforts across countries could benefit smaller countries. Transplant societies, including STALYC, could play a vital role in supporting the advancement of paired donation, ensuring improved access to transplantation for their populations, especially with living donors."

Tuesday, February 27, 2024

Stanford Impact Labs announces support for kidney exchange in Brazil, India, and the U.S.

 Stanford Impact Labs has announced an investment designed to help the Alliance for Paired Kidney Donation (APKD) increase access to kidney exchange in Brazil, India, and the U.S.  Here are three related web pages...

1. Stanford Impact Labs Invests in Global Collaboration to Increase Access to Kidney Transplants.  $1.5 million over three years will support solutions-focused project led by Stanford’s Dr. Alvin Roth and the Alliance for Paired Kidney Donation (APKD)  by Kate Green Tripp

"Stanford Impact Labs (SIL) is delighted to announce a $1.5 million Stage 3: Amplify Impact investment to support Extending Kidney Exchange, a solutions-focused project established to increase access to lifesaving kidney transplants.

"The team, led by Stanford’s Dr. Alvin (Al) Roth, who shared the 2012 Nobel Prize in Economics for his work on market design, and the Alliance for Paired Kidney Donation (APKD) is working in close partnership with organ transplant specialists and medical centers in Brazil, India, and the U.S., including Santa Casa de Misericórdia de Juiz de Fora, the Institute of Kidney Diseases and Research Center and Dr. H L Trivedi Institute of Transplantation Sciences (IKDRC-ITS), and Walter Reed National Military Medical Center.

"Over the course of the next three years, the team aims to increase the number of transplant opportunities available to patients who need them by creating and growing kidney exchange programs in Brazil and India, where millions of people suffer from kidney disease yet exchange is minimal; and explore the effects of initiating donor chains with a deceased donor kidney (DDIC) in the U.S., an approach which could unlock hundreds more transplants each year.

..."

2. How Does Applied Economics Maximize Kidney Transplants? A project aimed at expanding kidney exchange and saving lives puts Nobel Prize-winning matching theory into practice.  by Jenn Brown   (including a video...)

"APKD uses open source software developed by Itai Ashlagi, Professor of Management Science and Engineering at Stanford University, to facilitate the matching process for its NEAD chains, and they currently average 5 non-simultaneous transplants per chain.

3. Extending Kidney Exchange

"In Brazil, our team has launched a kidney exchange program within Santa Casa de Misericórdia de Juiz de Fora and Hospital Clínicas FMUSP in São Paulo and aims to expand to facilitating exchanges between these centers and others with the ultimate goal of kidney exchange transitioning from a research project to an officially approved practice in Brazil.

"In India, our team has deployed kidney matching software and resources for growth to the Institute of Kidney Diseases and Research Center and Dr. HL Trivedi Institute of Transplantation Sciences (IKDRC-ITS) to support kidney exchange programs. We aim to develop an evidence base for potential updates to organ transplantation laws that expand criteria for who can give and receive lifesaving kidneys.

"In the U.S., we are working with Walter Reed National Military Medical Center to test the use of deceased donor-initiated chains (DDIC) so as to generate hundreds of additional life-saving transplants each year that are not currently supported by today's practice of utilizing a deceased donor kidney to save the life of a single person on a transplant waitlist. "


 

Monday, February 26, 2024

Prison gangs, in Latin America and in the U.S.

 It's one thing to be able to capture and confine prisoners. When gangs are involved, it's quite another thing to control the prisons, or the ability of prisoners to continue to control gang activity outside of prison.

The NYT has the story, from Latin America:

In Latin America, Guards Don’t Control Prisons, Gangs Do. Intended to fight crime, Latin American prisons have instead become safe havens and recruitment centers for gangs, fueling a surge in violence. By Maria Abi-Habib, Annie Correal and Jack Nicas

"Inside prisons across Latin America, criminal groups exercise unchallenged authority over prisoners, extracting money from them to buy protection or basic necessities, like food.

"The prisons also act as a safe haven of sorts for incarcerated criminal leaders to remotely run their criminal enterprises on the outside, ordering killings, orchestrating the smuggling of drugs to the United States and Europe and directing kidnappings and extortion of local businesses.

"When officials attempt to curtail the power criminal groups exercise from behind bars, their leaders often deploy members on the outside to push back.

“The principal center of gravity, the nexus of control of organized crime, lies within the prison compounds,” said Mario Pazmiño, a retired colonel and former director of intelligence for Ecuador’s Army, and an analyst on security matters.

“That’s where let’s say the management positions are, the command positions,” he added. “It is where they give the orders and dispensations for gangs to terrorize the country.”

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I wrote a related post in November (see below) about a Brazilian prison gang, and received an illuminating email from Professor David Skarbek of Brown University, saying

"I enjoyed your blog post about the PPC Brazilian prison gang. I thought that you might be interested to know that the same phenomenon exists in the US as well. I'm attaching a piece I published in the American Political Science Review on the Mexican Mafia in Southern California."

Here's the link to that article:

Skarbek, David. "Governance and prison gangs." American Political Science Review 105, no. 4 (2011): 702-716.

Abstract: How can people who lack access to effective government institutions establish property rights and facilitate exchange? The illegal narcotics trade in Los Angeles has flourished despite its inability to rely on state-based formal institutions of governance. An alternative system of governance has emerged from an unexpected source—behind bars. The Mexican Mafia prison gang can extort drug dealers on the street because they wield substantial control over inmates in the county jail system and because drug dealers anticipate future incarceration. The gang's ability to extract resources creates incentives for them to provide governance institutions that mitigate market failures among Hispanic drug-dealing street gangs, including enforcing deals, protecting property rights, and adjudicating disputes. Evidence collected from federal indictments and other legal documents related to the Mexican Mafia prison gang and numerous street gangs supports this claim.

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Earlier

Tuesday, November 21, 2023

Tuesday, November 21, 2023

Balance of violence: prison-based criminal cartels, the case of Brazil's PCC.

The vexed relationship between banned markets and black markets is perhaps nowhere clearer than when prison based gangs of convicted drug dealers are able to extend their empires outside of prisons. While national authorities are able to capture, convict and imprison gang leaders, those gangs retain the ability to organize violence not only inside prisons but outside of them, and hence operate national and international black markets as well.

The Guardian has the story:

How a Brazilian prison gang became an international criminal leviathan  by Tom Phillips

"The PCC – First Capital Command – arose in the country’s notoriously brutal penitentiaries 30 years ago but now controls a billion-dollar drug trade supplying much of Europe’s cocaine,

...

"For much of its 30-year existence the PCC has been considered a jailhouse fraternity, which recruited incarcerated “brothers” such as the Venezuelan by offering them protection within Brazil’s violent, overcrowded prisons. Created in August 1993, it grew into Brazil’s most feared criminal faction, conquering drug markets, smuggling routes, shantytowns and prisons across Brazil, including in far-flung corners of the Amazon. It also became a major player in other South American countries such as neighbouring Paraguay where the group has been blamed for multimillion-dollar armed robberies and bombings and targeted assassinations.

But over the past five years, investigators say the PCC – which the US now calls one of the world’s most powerful organized crime groups – has morphed into an even more formidable force after forging lucrative alliances with partners ranging from Bolivian cocaine producers to Italian mafiosi. Today, the group boasts tens of thousands of members and has a growing portfolio of interests, including illegal goldmines in the Amazon. It controls one of South America’s most important trafficking routes – linking Bolivia and Brazil to Europe and Africa – and is partly responsible for a tsunami of cocaine that has brought car bombings, assassinations and gunfights to parts of Europe.

...

"During the 1990s, the PCC tightened its grip on São Paulo’s prison system but largely flew under the radar until thousands of guards and visitors were captured during a massive 2001 uprising. Five years later the group again made headlines, bringing São Paulo to a virtual standstill with a wave of coordinated attacks on police that caused hundreds of deaths.

...

"Having dominated much of Brazil’s domestic drug market – and established a monopoly over São Paulo’s crime scene – Gakiya said the PCC began looking overseas in late 2016. Deals were struck with Italy’s most powerful mafia group, the ’Ndrangheta, as well as Serbian and Albanian mafias, and the PCC began shipping tonnes of cocaine from Brazilian ports to Europe.

...

"Marcola, 55, who is serving a 342-year prison sentence for murder, robbery and drug trafficking, is also not a man to be crossed. In late 2018, Gakiya decided to transfer him to a high-security federal prison after the discovery of an audacious multimillion-dollar plot to free him with the help of foreign mercenaries, helicopters and anti-aircraft guns. “I knew it might change my life but I also realized it needed doing,” the prosecutor said, admitting he did not consult his family first.


Gakiya was no stranger to death threats, but moving Marcola turned his life upside down. PCC leaders issued a “decree” calling for the prosecutor’s assassination, condemning Gakiya to a reclusive existence he compared to the life of Giovanni Falcone, the anti-mafia crusader assassinated in 1992. “I hope, of course, not to share the same fate as Falcone,” added Gakiya..."

Tuesday, August 15, 2023

Affirmative action in Brazilian universities: guest post by Inácio Bó

 Recent legislation in Brazil addresses university admissions with affirmative action that targets multiple characteristics that individuals may have (in different combinations), namely income, ethnicity, and the type of institution at which they studied. Early attempts to implement such a system produced undesirable outcomes, but recent legislation, informed by market design, is on the path to correcting this. Below, Inácio Bó brings us up to date:

Guest blog post by Inácio Bó

For many decades, Brazilian’s federal universities were—and still are— the top higher education institutions in the country. They had, however, a contradictory combination of circumstances: all of them were public-funded and tuition-free, but their students were overwhelmingly from a minority white higher socio-economic class. In response to that, in 2012 congress passed legislation mandating affirmative action in the access of all such institutions.

Orhan Aygün and I were at that time classmates pursuing our PhD in economics at Boston College. We spent days and weeks looking at the details of the structure of the rules for implementing the law, trying to better understand it. While working on some examples, we noticed that there could in principle be situations that were at odds with the intended objective of the law. Under some circumstances, black and low-income candidates would be rejected from positions where white and high-income candidates would be accepted, despite the former having higher entry-level exam grades than the latter. This  would be an outcome that goes in the opposite direction from the intended objective of helping black and low-income students attend these institutions.

The reason for this problem lies on the method used for implement the affirmative action law in the universities. Seats in each program in each university were split into groups of seats, including “open seats”, “black candidates”, “low-income candidates”, and “black and low-income candidates”. When applying for a program, a candidate would choose one of the alternatives for which she is eligible. The top candidates among those applying for each set of seats, ranked by their grade in a national exam, would be accepted. This method might, however, result in different levels of competition for different seats in the same program, resulting for example in tougher requirements for acceptance for “black and low-income” candidates than for “black” candidates, even if on average low-income candidates have lower grades overall.

In a paper published in the AEJ:Micro in 2021 (Aygün, Orhan, and Inácio Bó. 2021. "College Admission with Multidimensional Privileges: The Brazilian Affirmative Action Case." American Economic Journal: Microeconomics, 13 (3): 1-28.), we showed how this problem can be solved while still satisfying the text and spirit of the affirmative action law in Brazil with small changes in the way by which candidates are selected. (The idea is to order slot-specific priorities so that candidates with protected characteristics can compete for all of those slots for which their characteristics qualify them.) The paper also shows “smoking gun” evidence that these “unfair rejections” were taking place, showing that programs where the cutoff grades for acceptance for each subset of seats were compatible with these rejections constituted almost half of the programs offered across the nation.

While the article gained praise in the academic economic community, our hopes that it would reach the policymakers in Brazil were initially dashed. Despite having the chance of personally visiting the Ministry of Education in 2015 for two weeks, my attempts to talk with those in power were unsuccessful, and people to whom I explained some of our findings deemed its contents “critical of the government”.

 Especially in light of the political developments that took place in Brazil in the years that followed, I had mostly moved on from my hopes of seeing the changes we proposed being implemented.

Things started to change, however, around May of 2022. The staff from the office of representative Tábata Amaral, who is a prominent young politician with a focus on education, were having talks with Ursula Mello, now a professor at the Department of Economics at PUC-Rio in Rio de Janeiro, about some aspects of the affirmative action law related to her work. Given her knowledge about the AEJ:Micro paper, Ursula suggested that I join the discussions. A meeting where this happened even ended up in the press (https://www1.folha.uol.com.br/educacao/2022/05/pesquisadores-defendem-novo-algoritmo-no-sisu-para-nao-prejudicar-cotistas.shtml).

Adriano Senkevics, her co-author in related papers who works at the INEP—an agency connected to the Brazilian Ministry of Education in charge of evaluating educational systems—also joined.

In these discussions, it became clear that if we wanted our ideas to have any chance of gaining traction, we needed to write a policy-oriented paper, focused on the current Brazilian specifics, in Portuguese, and with policy-makers as the audience—not academics.

Adriano and I worked together in that project, now with a much more detailed dataset. We tailored the proposal to the updated law, which also included reservations for candidates with disabilities, and were finally able to quantify the negative impact of the failures we identified. Our estimates indicate that, in the selection process of 2019, at least ten thousand students were “unfairly rejected” from their applications, with more than 8 thousand being left unmatched to any university despite having an exam grade high enough to be accepted for less restrictive reserved seats. These numbers greatly exceeded our expectations, and made a clear political case for a change. The working paper went out in January of 2023 (“Proposal to change the rules for the occupation of quotas in the student entrance to federal institutions of higher education,” by Inácio Bó and Adriano Souza Senkevics).

While the theoretical arguments were already in the AEJ:Micro paper, the proposal had a greater and faster impact in the corridors of the Brazilian capital. Articles in the main newspapers in the country reported on the findings and the proposal (https://oglobo.globo.com/brasil/educacao/enem-e-vestibular/noticia/2023/03/quase-650-candidatos-para-uma-vaga-maiores-concorrencia-do-sisu-estao-entre-os-alunos-cotistas.ghtml

, https://oglobo.globo.com/brasil/antonio-gois/coluna/2023/02/reformar-o-sisu.ghtml

, https://www1.folha.uol.com.br/colunas/rodrigo-zeidan/2023/04/desenhando-mercados.shtml )

People were openly sharing the article on twitter with members of the ministry of education

(https://twitter.com/thiamparo/status/1621189953785839617?s=20 ,

https://twitter.com/mgaldino/status/1621008428763332612?s=20 ). We could feel the momentum.

In the months that followed, I started having regular interactions with members of the Ministry of Education. The text and zoom discussions involved technical and political aspects of changes in the law, which extended beyond the specific changes we suggested.

Different variations of the changes and some alternative proposals were considered. I had to run simulations while flying to deliver them before a meeting that the secretary had with the minister. I also had the incredible experience of joining a meeting at the “Casa Civil”—a department somewhat comparable to the prime minister in a parliamentary system—with the presence of secretaries from multiple ministries , where I presented our proposal and discussed some details and scenarios. Around that time, and without our knowledge, a senator presented a bill explicitly based on our proposal (https://www25.senado.leg.br/web/atividade/materias/-/materia/156995 ).

By the end of June, our belief that the changes would be implemented became stronger. Since our proposal was (by design) already compatible with the quotas law, its implementation could be done even in the absence of new legislation, and there was clear interest on the part of those in charge for making it happen.

A momentous event in this journey, however, took place on August 9th.

Because of a series of political circumstances, an urge to pass a renewed law for the affirmative action led to a bill proposed by Representative Dandara—the first member of congress who herself benefitted from the quotas law—to be brought to the floor for a vote.

Among other changes, it made the affirmative action policy permanent, changed the order in which seats are filled, and included text that should, in the following secondary legislation, include text that describes our proposal. As if emotions were not high enough, we had urgent calls to send the text of our proposal to members in the floor of congress minutes before the vote took place. And this resulted in the photo below, showing Dandara giving a speech before the vote, with a page from our paper in her hand.


The journey is not yet over. The bill must still pass the senate, and the legislation with the implementation details will follow. But I learned that these changes are made of so many steps that one has to choose one as the turning point. We believe that this is a good one.

The INEP (National Institute of Educational Studies and Research) thinks so too: (https://www.gov.br/inep/pt-br/assuntos/noticias/linha-editorial/inep-contribui-com-atualizacao-da-lei-de-cotas)