The Crips are an alliance of street gangs that is based in the coastal regions of Southern California. Founded in Los Angeles, California, in 1969, mainly by Raymond Washington and Stanley Williams, the Crips began as an alliance between two autonomous gangs, and developed into a loosely connected network of individual "sets", often engaged in open warfare with one another. Its members have traditionally worn blue clothing since around 1973.

A gang is a group or society of associates, friends, or members of a family with a defined leadership and internal organization that identifies with or claims control over territory in a community and engages, either individually or collectively, in illegal, and possibly violent, behavior, with such behavior often constituting a form of organized crime.