This is a flier for a 1970 Milwaukee benefit show/concert for John Sinclair, the one-time manager of the MC5 and leader of the White Panthers. Sinclair was sentenced to 10 years in prison after handing off several joints to an undercover officer. The show featured local bands Furry Quim Slash, Rain, Trapped in Amber, and others. The benefit was held at the Holy Rosary church basement. The flier features Thor fighting the system “for all victims of pig injustice!” This appeared in the Feb. 1, 1970 issue of The Kaleidoscope, a Milwaukee underground newspaper.