As the others have already said, the tone of your letter is excellent. perfect!
one thing I questioned was including the story about Justin. It is likely that from the lens Gene and those who share his perceptions are looking through, that they would take Justin's story as proving THEIR point. Although I heard your message clearly.
I also wonder if we have statistics supporting the argument that gay males as a group have attained higher educational levels than straight males? Do we actually have such a statistic? My eye also flagged that reference because it has been used in the past as an anti-gay argument that 'gays are all affluent and privileged,' ie., part of that spooky 'cultural elite' we are all supposed to be afraid of.
The only other stuff I noticed were a few places where a lengthy phrase could be shortened a few words here and there to make the letter more succinct.
Overall, a fine achievement, particularly your use of an inviting voice, and all the practical suggestions of ways to use one's energy. Seriously? The list of volunteer opps is BRILLIANT and I certainly hope this gets printed.
Never linger too long with the ignorant,
throw stones at their talk.
Walk only with the lovers,
the mirror of the soul gets rusty when
dipped in muddy water.