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We use data and scientific evidence to make Brazil a safer country.
Leme is a public policy lab that partners with public safety and justice institutions, as well as civil society organizations, to design and evaluate violence reduction strategies that are effective, feasible, and scalable.

Our work

Our technical and strategic support focuses on five core areas of public safety:

Combating Violent Organized Crime

We conduct research to map and understand the territorial and economic control exercised by armed groups, supporting the development of strategies to reduce risks, contain the expansion of this phenomenon, and strengthen state capacity.

Strengthening Police Institutions

We strengthen police institutions through systematic use of data, implementation and evaluation of innovative practices, and the training of strategic leaders, creating conditions for decisions grounded in data and evidence.

Expanding Municipal Leadership

We support municipal governments in implementing public safety policies, with a focus on designing governance mechanisms, building violence prevention networks, and developing Municipal Public Safety Plans.

Preventing Youth Criminal Involvement

We strengthen strategies to prevent juvenile offending and criminal involvement by integrating data to monitor risk trajectories across the life course and assess the impact of innovative initiatives.

Addressing Violence Against Women

We support the development, improvement, and evaluation of evidence-based protection policies for victims of violence against women, with a focus on strengthening institutional responses and reducing re-victimization.

Projects

Explore our work across different themes

Events

18Mar2026

FEA-USP Workshop on the Economics of Crime

On March 18, 2026, the FEA-USP Workshop on the Economics of Crime was held in São Paulo. The event marked the launch of the Grupo de Estudos em Economia do Crime e Violência (GEECRIM) and brought together researchers from institutions such as FEA-USP, IRI-USP, Fundação Getulio Vargas (FGV), and Insper to discuss topics including urban and domestic violence, the environment, organized crime, and public policies.

27Feb2026

Institutional Innovation and Data-Driven Management in Public Security Seminar

The Institutional Innovation and Data-Driven Management in Public Security Seminar was held on February 27, 2026, in Rio de Janeiro, and marked the inaugural session of the city’s first training course for municipal public security managers, organized by FGV EBAPE in partnership with the Prefeitura do Rio de Janeiro.

1Dec2025

Seminar on Data and Artificial Intelligence in Public Security – Use of Evidence, Domestic Violence, and Predictive Algorithms

Held on December 1, 2025, by the Secretaria da Segurança Pública do Paraná (SESP/PR), the seminar aimed to present the development of the Domestic Violence Revictimization Algorithm, the result of a partnership between CAPE/SESP and the Inter-American Development Bank (IDB), with technical consulting from Laura Schiavon, Ísis Lira, and Matheus Nascimento, researchers at Leme.

13Aug2025

19th Meeting of the Brazilian Public Security Forum

The 19th Meeting of the Brazilian Public Security Forum (FBSP), held from August 13 to 15 in Manaus, fostered debates on the challenges of public security in the Amazon, linking local complexities to the global urgencies of the climate emergency and the protection of cities and the forest. In the panel “Safe Cities for Whom? Dialogues on Public Security at the Local Level,” Ramon Chaves, project leader at Leme, shared reflections on the role of municipalities in reducing street crime in medium and large cities, highlighting the advantages of municipal action, the evidence connecting the urban environment to criminal dynamics, and the impact of recent regulatory changes, such as the Supreme Federal Court (STF) decision recognizing the role of Municipal Guards in ostensive policing.

News

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