The previous poster used the term “left-leaning”, not “liberal”, though I’m not sure they don’t mean the same thing now. The concern I have is that a doctrinally uniform field of study doesn’t strike me as healthy for a society. We already have a problem with quashing dissent. As far as using foul language, I have no idea if one type of professor or another is more likely to do so and (I) neither does anyone else, (ii) even if it is the case, it is no basis for becoming a one-note department and (iii) the language issue was not the matter I was asking about; the desirability of uniformity of political perspective was.