Homosexuals, and only a segment of them. While you dig "live and let live" they want everyone to approve how they live, even if it means forcing it on us. To the gay activist, the idea that they should keep their activity in their bedroom and leave the rest of us alone is one step removed from deciding to lynch them.
No, you guys (social conservatives) never seem to figure out that once you give government the authority to enforce morality, they can cram pretty much whatever they want down your throat, even if you find it objectionable.
Do you realize how silly you sound when you use that load in a discussion of gay marriage? Here's a clue, sparky, it used to be ILLEGAL for these people to even hook up. Then we decided that we couldn't legislate morality, and the next thing you know we've got people teaching kids fisting in the schools. And why is that? It's because when someone says, "I don't want to put these folks in jail, but we have got to put a stop to this" we get the "you can't legislate morality" routine and the "tolerance" routine and the "it's for the children" routine.
Lastly, the idea that we can't legislate reality is the biggest pile of horsecrap in politics. We do it all the time. Is stealing immoral? Cheating on your taxes? Beating your wife? Abusing a child? Flashing your groin at passersby? The only question is who's morality will be the one guiding the legislation.