Gay people don't receive education in the history of the struggle for civil rights unless they go out of their way to learn it. As a result, we tend to have to relearn the same lessons every generation.
Harvey Milk, head of the SF Board of Supervisors, was the first openly gay elected official in America. He and Mayor Moscone were assassinated by Dan White, a member of the board who had quit and then demanded reinstatement.
Milk had actually made recordings to be played in the event of his assassination. That's how dangerous it was then for an openly gay person to hold public office. Like Martin Luther King, he anticipated it. The recordings were played at an enormous memorial rally in the Castro soon after his death.
The term "Twinkie Defense" originated with White's trial. White successfully plead guilty to a lesser charge of manslaughter on the basis of diminished capacity. Defense attorneys argued that one symptom of that -- not the cause, as is usually thought -- was eating junk food. (White was a health-food junkie before this, apparently.)
The verdict, basically four years in prison as I recall, provoked a riot, just as obvious miscarriages of justice provoked ghetto riots in the '60s.
There's a documentary film about Milk and several plays, even an opera, have been written about the incident.