Some of the earliest San Francisco hippies were former students at San Francisco State College who became intrigued by the developing psychedelic hippie music scene. These students joined the bands they loved, living communally in the large, inexpensive Victorian apartments in the Haight-Ashbury. Young Americans around the country began moving to San Francisco, and by June 1966, around 15,000 hippies had moved into the Haight. The Charlatans, Jefferson Airplane, Big Brother and the Holding Company, and the Grateful Dead all moved to San Francisco's Haight-Ashbury neighborhood during this period. Activity centered around the Diggers, a guerrilla street theatre group that combined spontaneous street theatre, anarchistic action, and art happenings in their agenda to create a "free city". By late 1966, the Diggers opened free stores which simply gave away their stock, provided free food, distributed free drugs, gave away money, organized free music concerts, and performed works of political art.