Tekla is right. Remember that once upon a time, being gay was illegal in some places. Considered a mental illness that could be cured. There are still backwards thinking people who feel it's perfectly fine to oppress homosexuals, but these days there is a lot of support for homosexuals as well. Part of what changed hearts and minds was showing that GLB folks were people, maybe even people that bigoted straights already knew or were related to.
Trans folk are still lagging behind here, but social changes take time and effort. I do go to Pride and I hang out with other gay males, because that is what I am. Some of them have never met a gay transman before. And yes, I have run into gay men who initially reacted with a hostile attitude due to my trans-nature. The best I can do is to be friendly, open and comport myself with dignity and intelligence, and behave as if I deserve respect because I DO deserve respect. Some of these initially hostile men have become friends and allies, because they now see that I'm a real person.
In many ways, we are our own ambassadors. There is no way to change minds about us if those minds never have to meet us. As long as they do not meet us, we remain shallow stereotypical ideas, and no one needs to consider the feelings of mere ideas.