The political ideals of hippies influenced other movements, such as anarcho-punk, rave culture, green politics, stoner culture and the New Age movement. 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 of his friend, Wally Hope. Crass had its roots in Dial House, which was established in 1967 as a commune. Some punks were often critical of Crass for their involvement in the hippie movement. Like Crass, Jello Biafra was influenced by the hippie movement, and cited the yippies as a key influence on his political activism and thinking, though he also wrote songs critical of hippies.