May Day Demonstration, Union Square, New York, New York. Participants include Beulah Sanders, Frederick Douglass Kirkpatrick, Gus Hall, Jarvis Tyner, Mass Approach Singers, Carlos Feliciano, Elsie Otero, Pauline Rosen, Sam Pevzner, Alan Knockwood, John Williams (VVAW), Ben Spivak and Morris Davis. Photos by Bill Andrews.: May 1, 1973