The California Department of Justice estimates there are between 175,000 and 200,000 gang members in the State, primarily affiliated with black, Hispanic, Asian, and white skinhead gangs. Their criminal activities range from drug trafficking, robberies, burglaries, auto theft, and receiving stolen property to witness intimidation, extortion, assault, and drive-by shootings. If this trend continues, by the year 2000, up to 250,000 gang members will pose a serious, violent crime threat to all major metropolitan communities in the State. Gang violence is increasing, as gauged by the rising number of gang-related murders. Gangs have access to high- powered, large-caliber handguns, shotguns, and automatic and semiautomatic rifles. Gang members have not hesitated to shoot at police officers during investigations and pursuits. Gangs are recruiting younger members, who will tend to remain active for longer periods of time and develop crime careers. Female gangs are beginning to develop exclusive of male- dominated gangs. A primary key to preventing the impact and influence of gangs is investment in youth through schools and communities. Successful gang prevention programs generally provide partnerships and multidisciplinary approaches. 73 references, 1 appendix