Anti gay bigots say that Miss California was simply exercising her right to Freedom of Speech and that ....?

There is no difference between saying "gays shouldn't be allowed to marry" and "interracial couples shouldn't be allowed to marry." The difference is only one that is distinguished in the minds of bigots. I'm sure that people that railed against interracial marriage in the sixties and seventies, calling it "unnatural," and "Against God" didn't think they were bigots, either.