50th Anniversary of HUAC Protests   KPFA Radio commemorates the 50th anniversary of historic protest against the House Un-American Activities Committee hearings in San Francisco, known as Black Friday. On May 13, 1960, demonstrators gathered at San Francisco's City Hall to protest HUAC's appearance in the Bay Area to ferret out "communist subversion." San Francisco police attacked hundreds of protesting Bay Area students with billy clubs and fire hoses and 64 young people were dragged down City Hall's marble stairwell and arrested.  FBI Chief J. Edgar Hoover labeled the demonstrators "Communist dupes" and HUAC made a propaganda film, Operation Abolition, about the conflagration. Historians consider the anti-HUAC protest in San Francisco as the birth to the New Left in the Bay Area, which led the way for the country as a whole, and eventually the Free Speech Movement.   KPFA was there and broadcast from the tumultuous HUAC hearings. On May13th we feature archival audio from that day, as well as interviews with scholars and participants in the demonstrations, marking this important milestone in Bay Area and US history. 50th Anniversary Commemoration The Morning Show Thursday May 13 On today's show-we speak with Barbara Epstein, Prof., History of Consciousness at UC Santa Cruz about the 50th Anniversary of SF protests against the House Committee on Un-American Activities,Berkeley in the Sixties.We also speak with Tyson Slocum of Public Citizen about Climate Change Legislation introduced in Senate. We close out the show with Dr. Daniel Amen about his new book- Change Your Brain Change Your Body.