"The overall number of youth gang homicides in U.S. cities declined during the 1990's, but trends varied in the early and later parts of the decade and by city. This Fact Sheet discusses the results of a study of youth gang homicides in U.S. cities in the 1990's, which was conducted by the Office of Juvenile Justice and Delinquency Prevention's (OJJDP's) National Youth Gang Center. The study combined results from multiple years of National Youth Gang Surveys and previous law enforcement surveys of gang activity in general and gang homicides in particular. Throughout this Fact Sheet, the word 'gang' refers to 'youth gangs.' The term 'gang homicides' refers to incidents that involve gang members as victims and/or offenders; some cities reported figures on more narrowly defined, gang-motivated incidents. Because the study used several databases, gang homicide trends during the decade were examined in two parts: the early to mid-1990's and the late 1990's."
OJJDP Fact Sheet, No. 03; FS 200103
Office of Juvenile Justice and Delinquency Prevention: http://www.ojjdp.ncjrs.gov/