"This intelligence assessment is a collaborative effort between the National Gang Intelligence Center (NGIC) and the NDIC to examine the threat posed to the United States by criminal gangs; it supports U.S. Department of Justice strategic objectives 2.2 (to reduce the threat, incidence, and prevalence of violent crime) and 2.4 (to reduce the threat, trafficking, use, and related violence of illegal drugs). The assessment is based on federal, state, and local law enforcement information and is supplemented by information retrieved from open sources. Information and data used for this report were collected through September 2008. This assessment discusses the proliferation of gangs from urban areas to suburban and rural locations, estimates of the number of gangs and gang members in the United States, gang types, gang-related criminal activities, locations where specific gangs operate, and the relationships between gangs and other criminal organizations. Regional summaries highlighting the most significant gang-related trends are also provided. The assessment also identifies intelligence gaps and provides predictive estimates regarding significant gang-related issues."
Bureau of Alcohol, Tobacco, Firearms and Explosives: http://www.atf.gov/