The 1984 documentary The Times of Harvey Milk, narrated by Harvey Fierstein (whose voice I love, so don't be dissin' his voice), is available on youtube in segments, starting here.
I was so moved by that film. [ETA: Still am.] Speeches do change lives, like lives like Harvey's change lives. I ordered the transcript of the film---this was back when you had to write away for stuff---so I could experience Harvey's words again. I still have the little stapled-together booklet from WNET; I take it out and read from it once in a while.