IMO, the entire situation with Evergreen College is closer to being an alt-Right propaganda piece than a leftist one. Screaming at and demanding the resignation of a professor essentially for saying that "On a college campus, one's right to speak - or to be - must never be based on skin color" looks pretty bad, you know? The fact it was produced by leftists who need a far better grasp of optics really doesn't change that.
Removing things that make one side look bad - but not similarly doing the same for the other side - is bias, yes. Unless you think YouTube would have removed videos taken by the protesters if the situation was reversed, and it was a neo-Nazi protest that was looking horrible?