The first gay parade in San Francisco was organized by a music company represented a heavy metal rock group called Black Sabbath.  It featured mostly the leather enthusiasts, and the floats were sparse except the one for the band.  It moved up Folsom Street .  The next year the parade was organized by gay organizations and began its trek up Market to the Castro.  By 1972 the parade began at the Ferry Building and finished at City Hall.   Chase filmed the parade in 1972 (see PARADE under FILM).  He continued to photography parades until the late seventies. His interest was primarily focused on small intimate moments - especially when spectators had mixed feelings about the display on hand. Despite the obvious advances, many gay people were still under pressure to stay in the closet, and these parades brought out their obvious pain.