Politically motivated movements aided by hippies include the back to the land movement of the 1960s, cooperative business enterprises, alternative energy, the free press movement, and organic farming. The San Francisco group known as the Diggers articulated an influential radical criticism of contemporary mass consumer society, and so they 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. The Diggers took their name from the original English Diggers (1649–50) led by Gerrard Winstanley, and they sought to create a mini-society free of money and capitalism.