Three thousand jurisdictions across the U.S. are estimated to have had gang activity in 2001. In 2002, 32% of cities with a population of 25 to 50 thousand reported a gang-related homicide.

Three thousand jurisdictions across the U.S. are estimated to have had gang activity in 2001. In 2002, 32% of cities with a population of 25 to 50 thousand reported a gang-related homicide.