A lot has been said on leftist infighting. But here's something that's worth repeating: a lot of "leftist infighting" is actually libertarian leftists (rightly) attacking authoritarian leftists. Like, guys. Come on. Unlike the "libertarian" right, we're not going to ally with a bunch of people who'd just as soon kill us off for ideological reasons in the name of some BS notion of "left unity". We see through your ploy and (rightly) reject you.