I call all extremists morons, be they left or right. It's distinctly un-American (and pretty lousy in general) to decide you somehow deserve to be right and get your way, even if your way completely overrides the rights of others to live how they wish.
Whether it's that idiot redneck you know who refuses to talk to black people, or the crazy leftist who wants their comrades to move to other states purely because the citizens of those states aren't voting the way said leftist wants, I call foul. Not cool at all.