Saying homosexuality shouldn’t be legal isn’t an opinion, it’s bigotry. Viewpoints that infringe on a persons rights are not opinions, it’s discrimination. I agree people should be able to speak freely but I also believe in standards. To take another example, if somebody has the “opinion” that women shouldn’t be able to refuse their husbands sexual advances, is this discussion that is acceptable or is it bigotry? Should people be able to openly discuss their “opinion” that adults should be able to have sex with minors? What if their opinion is that they should be allowed to kill homosexuals? There is a line. Idealism only goes so far.