Aggressive police anti-gang activity in the late 20th century can be dated to the mid-1970s, when the law enforcement campaign against gangs called Total Resources Against Street Hoodlums (TRASH) was initiated in East Los Angeles. This movement toward a robustly proactive approach to street gang crime represented a shift from the social controls traditionally used for dealing with juvenile violence, particularly in urban areas, since the turn of the century. [Source: Encyclopedia of Law Enforcement; Gangs Investigation]
gangs investigation
concepts
types of investigation