Evan Gahr writes that opponents of gay marriage have teamed up with radical Islamists. Didn’t social conservatives used to oppose the “big tent” strategy for the Republican party? To have made tactical alliances with fairly brutal Islamic dictatorships at the United Nations in the 1990s may have been defensible. After 9/11, this kind of coalition politicking is simply appalling. Gay marriage may or may not be a good idea. The Islamists want to kill us.