I'll never forget Enid Bloch, University at Buffalo. Worst professor I've ever had and a perfect example of the liberal professor injecting their own political beliefs into their courses. She claimed that she wanted free thinking but if you didn't agree with her extreme liberal points of view in your papers, it's an automatic C. Learned my lesson quickly and regurgitated everything she talked about in class and turned my semester grade for World Civ into an A. My roommate didn't fare quite as well. He basically argued against her POV in his papers even though he was and still is a liberal, and ended up with a C (you may wonder if he's just a dumbass, but the man is an MD/PhD right now). It was her class that made me realize that I wasn't quite as liberal as I was told I should be. If anything, I think it was my first experience that being liberal and open minded in college meant being completely accepting to anything that was not western and all the evil that was done to the world was done by white people and large corporations.
Engineering school was much better since it was all science and engineering and zero politics. The professors taught you the content and you worked on integrating that into problem solving. I do not ever recall any political agendas being pushed.
In case you're wondering, I'm not white...I'm asian.