The Mod Squad (1968)

Police Capt. Adam Greer recruits a trio of "hippie cops" with their own checkered pasts to infiltrate the counterculture and nail the adult criminals preying on clueless young Southern Californians. This "youth squad" is made up of Pete, whose wealthy parents have kicked him out of their posh Beverly Hills home; Linc, a veteran of the ghetto who had been arrested during the Watts rioting; and Julie, a former hooker from San Francisco who was arrested for vagrancy.