So much to say, so little reason...
Rick claims that if your bigotry is supported by a religion, it's not bigotry, definitionally. By that standard, I assume ex-Senator Frothymix also believes that if a Muslim kills his wife for uncovering her face in public, it's not murder.
More interesting, given the wholesale rejection of science by all but one of the Republican presidential cabal, is his dismissal of the findings of studies with a completely off-point claim about membership in a professional society, as a way to reject research without a second or first thought. This affords some insight into the lack of insight that characterizes Republican thinking (as opposed to conservativism, for which, if it still existed as a philosophy in that disaster of a party, I have a lot more respect). It's the sort of thing that makes it impossible to carry on any kind of meaningful conversation with people like Santorum, of whom it now seems there is no other kind on that side of the divide. His is not an argument; it's a deflection --which is probably to give him too much credit for strategy. More correctly, it's idiocy, passing in his mind (and, likely, in those of his audience, the smarty pants girl excepted) for brilliance.
In the video he asserts (on what basis who knows?) gay marriage will destroy us all, and I'm pretty sure he believes it. I mean, all you have to do is look at a state like Massachusetts, where it's been legal for years, and see ... well... never mind.
And there's the point: blind to evidence in front of his face, able to reject it without breaking a sweat, Rick Santorum will never change his mind about same sex marriage. Nor will his constituents; nor will they about any beliefs they hold, unable to distinguish them from reality. Given the sort of non-arguments he considers actual argument, there simply is no way to get though. We see it universally in our politics, on the airwaves, and, when they unskulk, in commenters on this blog. And then there's the comfortable ease with which Rick Perry dismisses evolution and fudges the age of Earth. Or finds ways to replace people who threaten his agenda.