The professor might have a point if she were trying to look black; she wasn’t. She was trying to look like a chimney sweep.
Why does PT hate penguins?
Bingo.
We can’t dismiss accusations of racial tones in old films/lit out of hand. They exist.
We also probably shouldn’t overreact in minor cases. They were socially acceptable in their time.
If I couldn’t watch any sitcoms with homophobic jokes from my childhood, I probably couldn’t watch many. I wouldn’t advocate for them to be included in new ones going forward, because I know they made my life more complicated.
But they should exist as a record of how things were, or younger people lose perspective.
Watch old movies on TCM on any given day, and you’ll find all kinds of questionable dialogue.
This professor may stir up a provocative lecture, presumably to spark a robust discussion. It shouldn’t go beyond that.