[lsd5you]

It is of course more akin to anti-semitism. Which is in essence a resentment against a more successful and influential class of people.

To be sure in all of these divides there is some substance to both sides (otherwise there wouldn't be an issue, all racism would marginalised flat earth level nonsense).

Also there are big problems with your conclusion. Philosophy departments are going to be overwhelmingly left leaning, so shouldn't that be an environment that doesn't exclude? Unless we conclude that virtually all left wing positions are just posturing, or that the problem isn't racism.