Since 2015 we’ve seen an increase in petitions and movements to denounce professors. Typically a professor says or writes something, then a group of students protests. The students demand that the professor be censured or renounced by the university administration, or by his or her colleagues. The event is amplified by social media and by secondary, agenda-driven news outlets, pressuring other professors to take sides and declare themselves publicly. (There is a different script for pressure from right-wing sources off-campus).
The two highest profile cases so far involved Erika and Nicholas Christakis, at Yale, and Bret Weinstein, at Evergreen. We also had the case of Rebecca Tuvel, a philosopher at Rhodes College, in which the pressure campaign did not come from students but rather from other professors. In all of these cases the professor in question was on the left politically, and had said something that most professors did not find offensive. As far as I can tell, most professors outside of the immediate conflict zone supported the accused professors, thought it was inappropriate to subject them to punishment of any kind for what they said or wrote, and thought that these denunciation campaigns ultimately reflected badly on the academy.
Now, in late August, we have a case that may play out differently because the professor in question is a conservative who has made a conservative argument about poverty and culture. She made the argument a few days before the events in Charlottesville. Students at Penn have demanded that the university denounce her, and many of her colleagues did so.