Homosexuals, bisexuals, and transvestites already have basic human rights. They can vote, own land, live in any state they chose, start a business, go to school, file lawsuits, receive due process in court, etc., etc. They can't be targeted for violence based solely on their sexual practices.
What they shouldn't be allowed to do is force the state to recognize an abnormal relationship by sanctioning a marriage between two men, like about 18 states have said loud and clear. If two men want to live together and have sex with each other, that is their business. When they ask the state to use my tax dollars to endorse their conduct, then it becomes my business.
I agree with everything Colossus has said, including that this is a moral issue. But we don't have to use morality to prevent the granting of special rights to people based on their sexual practices. When you get past the "equal rights," "human rights," "civil rights" smokescreen, we're really talking about legitimizing abnormal behavior. So, I see a definite correlation between things like bestiality, polygamy, and even incest. Ever heard of the Man-Boy Love Association (or something like that)?
From a religious standpoint, you have to be very concerned about this movement if you're a Christian. The Bible condemns homosexual conduct (not the person). It is unquestionably unacceptable behavior from a purely religious standpoint.
That said, my office hired a gay summer intern, partly with my approval, and I'm working with him. Gave him an assignment yesterday in fact. I have no problem working with him, communicating with him, joking around, etc., like we did yesterday and will do for the rest of the summer. I'm not afraid of him at all and don't hate or dislike him. He's actually a very nice kid.