I had a history prof go on a class long tangent about how communists were evil because Marx said religion is the opiate of the masses. I, being a cringe atheist at the time thought "damn that's cool af, this Marx guy is spitting" and I think that was the general consensus of the class.

Geography professor however started day one with a lecture on why Mercator, and most other map projections are racist, and told us that he wasn't listening to any complaints about saying that from anyone white.