The 'rights' angle isn't consistent. I'd love to find out why those who push the 'equal rights' principle are not advocating for those who want to marry multiple partners? Why are you not championing the 'right' of Mormons and Muslims to have multiple wives? Are they not deserving of 'equal rights' in the same way that gay people are? If you're going to push this rights barrel you should be up front and honest about the logical conclusion about what you're asking society to sign onto.
So enough about 'rights'. Unless you're advocating for polygamous relationships you're actually full,of crap when you speak about 'equal rights'.