I think certain areas of study get underestimated by some when they don't like the politics of those engaging in it. For instance, I do think gender studies, specifically within history, is more valid then people give it credit. Women are a part of history and yet their role tends to get overlooked often. Studying history with a focus on the roles women played within societies of the past is a legitimate endeavor which falls under gender studies but some get triggered by the very notion that studying gender as a concept has any value.
The professors in those fields tend to be left leaning is what I meant.