It’s one thing for Mayor Bloomberg to play nanny and hector New Yorkers about smoking and trans fats, as he never stops doing. But it’s quite another for him to grab the flag and start scolding foes of that planned mosque near Ground Zero, as he did Friday. The mayor was way, way out of line. “A handful of people ought to be ashamed of themselves,” he huffed. Well, we know one person who should be ashamed: him. Bloomberg got downright apocalyptic, calling the controversy “[as] important [a] test of the separation of church and state . . . as...