On the other hand, leftists won't be satisfied as long as there's somebody left breathing in the world, somewhere, that disagrees with them. Even then they won't be satisfied because their whole reason for being depends on purging the unbeliever.

Yeah, them and moo-slimes have a lot in common that way. No wonder the Left loves them. At least, they "love" them in the same way Mr Burns loves his Hounds.