Me and a lot of guys I know are in it. Where do you think they get those crowds? Crowds R Us? So I know a lot of people who were 'gay for pay for a day' as we called it. So we did the set up (I'm not a real movie person, I'm a rock person, so I pulled cables all over Castro Street and Civic Center), then went over and got my extra card and made another $90 per day (and food, lots of food) standing around and yelling.
What was funny was a lot of us were re-enacting scenes we were at (the first Gay Liberation Parades, and the 'White Night' riot) in the first place.
That Sean Penn is a good actor is not a problem, and stories are telescoped in movies and most people know that, but the real Dan White was not as homophobic as the movie made him out to be. DW supported many of HMs proposals, and had other major problems, not just an anti-gay deal. Remember that HM was not the target, that was the mayor, George Moscone, HM was just a bonus almost. The entire event was very sad. But like many sad events, it made a hell of a movie.
I wish they would have rolled film between the takes because Penn would get up and start to lecture/speachify in the manner of Milk and did a great job talking against the war, Bush and the rest.