The first video I found there, theoretically of Black Sabbath playing the Folsom Street Parade in 1970, has been vexing me for a while. When I first discovered it, everyone I knew said "there's no fucking way that's Ozzy". I'm no expert on Oz, but I was also confused by the "Folsom Street Parade" thing. Folsom Street Fair didn't start until 1984. What was this drag parade doing South of Market with a big float advertising Sabbath?
Well, thanks to the rocker/investigators of youtube, I finally have my answer. According to user Terrible1, that dude in black atop the Sabbath float is noted San Francisco Satanist, Anton LeVay. Apparently, Ozzy himself also makes a brief appearance. Oz fans, feel free to let me know if you see him here.
Moving on to gayer historical matters, here's Sylvester tearing it up in 1985:
Cakalingus at 5:05.
Seriously, there's a lot of great stuff to explore on their page. This footage of the 1989 Castro sweep is probably only interesting to those of you who were there, but I always enjoy watching queers scream at riot cops. Listen for that catchy slogan: "Media is Bullshit! It's all a pack of LIES!"
I'll finish this post off with an extremely special video of the 1975 Mr. and Miss Gay San Francisco contest. I kind of like that there's no sound, it adds to the ethereal, Antediluvian quality.