The History Channel continues its intense exploration of gang life in the sixth season of this acclaimed documentary series. Power-hungry street gangs have long plagued America, and this in-depth program examines their history and operations. Gangs investigated in Season 6 include Latino prison gangs the Tri-City Bombers and the Texas Chicano Brotherhood, and the California-based Vagos Motorcycle Club, a band of outlaws formed in the 1960s.