11/01/2012 06:38 pm ET Updated Dec 06, 2017

The Slippery Slope

With less than five days to the election, anti-equality forces are pulling out all the stops in Maine, Maryland, Minnesota and Washington, the four states with marriage on the ballot. As usual, they're targeting voters' fears: If we allow same-sex couples to marry, children will be threatened, religious freedom will be trashed, civilization as we know it will collapse, and so on.

One common argument suggests that if we allow same-sex marriage, then we'll have no principled reason to oppose polygamy, incest, or any other possible marriage arrangement. My response to this argument, here:

For my full series of videos responding to common arguments in the marriage debate, see here. And please share with friends voting in ME, MD, MN, and WA.