They never really directly addressed homosexual rights in any of the star Trek movies or TV shows, but I thought it be interesting to speculate on the state of homosexual rights in the Star Trek universe. I assume the Federation allows for equal rights for homosexuals and I heard in some of the novels the Klingon Empire respects homosexuals as long as they are competent warriors. I doubt the Cardassian Union would tolerate homosexuals, their society seems to be obsessed with preserving nuclear families and they don't have much time for orphans, so it seems there would be no place for homosexuals in their society. Likewise the Romulan Empire seems to perform a sort of eugenics program, with a Romulan officer saying they dispose of any children with any physical problems (like blindness) from birth, that doesn't seem like the kind of place that would tolerate homosexuals. It also seems that the Ferengi Alliance would not tolerate homosexuals, given how sexist the society is, any Ferengi who displays any sort feminine personality traits (like being attracted to men) would likely be treated as an outcast. I'm not sure about the Bajorans, they seem pretty religious, so maybe not, but then again we don't know if their religion is against homosexuality. Finally, I guess homosexual rights is a moot point in both the Borg Collective and the Dominion. The Borg don't have sex and the Vorta and Jem'Hadar do not seem reproduce sexually and I am not sure they have sex either. The Founders do not seem to have the same type of sexuality that humanoids do.