Laws are not imposed by the majority, they're imposed by the legislative branch, which is supposed to be representative of the majority. And typically in the case of something being legalized, it's not a matter of a new law, it's an old one being repealed.
Don't they teach people this kind of thing in high school, at least? Fuck, I think someone could get a better understanding of how the government works than some conservative homophobes just by watching all of those old "Schoolhouse Rock" cartoons.