“Hi, I’m Sarah Crank. Today’s my 14th birthday, and it would be the best birthday present ever if you would vote ‘no’ on gay interracial marriage. I really feel bad for the kids who have two parents of the same gender different skin color. Even though some kids think it’s fine, they have no idea what kind of wonderful experiences they miss out on. I don't want more kids to get confused about what's right and okay. I really don't want to grow up in a world where marriage isn't such a special thing anymore."
I don't know the reasoning behind this girl's and her family's opposition to gay marriage. However, I want to maintain that - from a Christian point of view - it is unfair to suggest that opposition to interracial marriage is the same as opposition to gay marriage. While opposition to interracial marriage in general cannot be backed up biblically, opposition to gay marriage is actually the default Christian position (look at the biblical evidence). Thus, it is simply not accurate to equate these two issues when it comes to a Christian's view on gay marriage.
Folks opposed to interracial marriage used Biblical citations
all the time, and they even were implicitly prominent in
Loving v. Virginia. Christians have no problem civilly recognizing marriages the Bible explicitly prohibits, such as among believers and non-believers, ostensibly on the grounds that it's civil and not religious marriage, and that religious liberty dictates that the government not make calls on scriptural interpretations like this. In fact, I've never met a Christian who is bothered by this holding, and I've asked. But gay marriage? Apparently that's different.
Of course it's not appropriate to equate the two. They are not the same thing, but the analogies are strong enough to show an obvious dissonance between conservative Christian's treatment of other types of religiously "questionable" marriages and the gays'. It all seems like weak special pleading to me.