You are free to say what you want, and free to deal with the repercussions. Everything can be framed as having two sides, but society at a certain point decides there isn't two sides.

The "pro-interracial-marriage" side is the only side that gets to speak its mind these days, because they are the side that is right. Try coming out as against interracial marriage and you will be run out of your company on a rail, as you should be, rinse and repeat for gay marriage.