RKMBs Forums .::Important::. Politics and Current Events Gay-rights advocates to challenge Proposition 8

And, in most places, so is gay marriage. And each one is illegal wholly by legistative act of the government in defining which marital relations are legal and which aren't.

If courts start striking down gay marriage, on the idea that it's a "right," or "privilege," it becomes more and more difficult for courts to uphold the statutes that make incest and polygamy illegal.