Is Academia Discriminating against Conservatives?
I doubt it. In order to discriminate against conservatives, they would have to recognize conservatives and I don't think they're able to do that. I've frequently heard people claim that I'm not a “real conservative” (I don't drag my knuckles enough).
My usual assumption is that many cases of what appear to be discrimination are instances of self selection. This can explain the political skew of faculties, even Ivy-League faculties. I see no reason to change my mind.