Book excerpt: Contents: (1) Background on Violent Crime; (2) Scope of the Gang Problem: Defining Gangs; Transnational Gangs; Factors Exacerbating the Gang Problem; Poverty and a Lack of Educ. and Employ. Opport.; Societal Stigmas; Role of the Media; Anti-Gang Law Enforce. Efforts; Prisons in Need of Reform; U.S. Deportations; (3) Country Anti-Gang Efforts: Mano Dura (Heavy-Handed) Anti-Gang Policies; Effects of Mano Dura Policies?; Alternative Approaches; Prospects for Country Prevention and Rehab. Efforts; Regional and Multilateral Efforts; OAS; Multilateral Develop. Banks and Donor Agencies; (4) U.S. Policy: Congressional Interest; U.S. Internat. Anti-Gang Efforts; State Dept.; Justice Dept.; USAID; Policy Approaches and Concerns.