Jonah Goldberg We know why black Democrats who object to Buttigieg’s gay marriage aren’t called bigots. It would be political suicide.When Vice President Mike Pence was the governor of Indiana, he got along well with the mayor of South Bend, Pete Buttigieg, despite the fact that Buttigieg is a gay, liberal Democrat and Pence is a straight, socially conservative Republican. Ironically, Pence is a straight man in both the sexual-orientation sense and the comedic sense, given his relationship with the president. But that’s not important right now. Neither is the…