They’d best STFU about southerners and incest after this:

But, Remember, Accepting all of the Arguments in Favor of Same Sex Marriage Would Never Lead to Anything Worse

The state’s (New York’s) highest court has toppled a cultural taboo — legalizing a degree of incest, at least between an uncle and niece — in a unanimous ruling.
While the laws against “parent-child and brother-sister marriages … are grounded in the almost universal horror with which such marriages are viewed … there is no comparably strong objection to uncle-niece marriages,” Tuesday’s ruling reads.