political action groups to oppose the war, refusal to serve in the military and conducting "teach-ins" on college campuses that covered Vietnamese history and the larger political context of the war. Scott McKenzie's 1967 rendition of John Phillips' song "San Francisco (Be Sure to Wear Flowers in Your Hair)", which helped to inspire the hippie Summer of Love, became a homecoming song for all Vietnam veterans arriving in San Francisco from 1967 onward. McKenzie has dedicated every American performance of "San Francisco" to Vietnam veterans, and he sang in 2002 at the 20th anniversary of the dedication of the Vietnam Veterans Memorial. Hippie political expression often took the form of "dropping out" of society to implement the changes they sought. 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. Such activism was ideally carried through anti-authoritarian and non-violent means; thus it was observed that "The way of the hippie is antithetical to all repressive hierarchical power structures since they are adverse to the hippie goals of peace, love and freedom... Hippies don't impose their beliefs on others. Instead, hippies seek to change the world through reason and by living what they believe." The political ideals of hippies influenced other movements, such as anarcho-punk, rave culture, green politics, stoner culture and the New Age movement. Arguments can be made that being "woke" is only the latest natural offshoot of hipness, since both seek heightened "awareness" of one's surroundings (social, political, sexual etc). For example, John Leland elaborates on the origins of coded language from African American slaves as a type of aware hipness and documents connections to downtrodden Jews and other minorities in American society in Hip: The History. Penny Rimbaud of the English anarcho-punk band Crass said in interviews, and in an essay called The Last Of The Hippies, that Crass was formed in memory