This is the first of four parts recorded at the teach-in on El Salvador held at KPFK, Los Angeles, March 1981. This portion includes Gloria Tierney of Amnesty International; Tony Bielensen, U.S. Congressman from Los Angeles; John Dingus, freelance journalist from Washington, D.C.; Lou Wolfe of the Covert Action Information Bulletin; Chris Chamberlain, aid to…