The discussion emphasizes that a coordinated approach is essential. Gangs in British Columbia range from loosely organized groups of adolescents who commit property crimes and minor drug offenses in the suburbs to a highly sophisticated group of career criminals who operate out of the urban core of Vancouver, are extensively involved in drug sales, and commit violent crimes. Recently, Vancouver has experienced a major increase in gang-related violence involving semiautomatic weapons, often resulting from conflicts among gangs regarding control of the drug trade and prostitution. Gangs historically have been ethnically based, but, except for Asian gangs, they are becoming increasingly multi-ethnic. Prevention strategies should reflect the characteristics of vulnerable groups, who range from multicultural children and youth new to Canada to active gang members. All agencies should focus on parent education and counseling, as well as provision of parenting centers in public schools. Schools should make programs in English as a Second Language a top priority as a gang prevention initiative. They should also develop friendship clubs, peer counseling, a buddy system, and partnership sports programs. Community agencies should be knowledgeable about local issues and should develop coordinated and responsive programs. Government funding and police efforts in schools and communities are also important. List of persons interviewed, annotated list of videotapes and training materials, and 37 references