"Gonzales: There is one question, Inspector Callahan: Why do they call you "Dirty Harry"?
De Georgio: Ah that's one thing about our Harry, doesn't play any favorites! Harry hates everybody: Limeys, Micks, Hebes, Fat Dagos, Niggers, Honkies, Chinks, you name it.
Gonzales: How does he feel about Mexicans?
De Georgio: Ask him.
Harry Callahan: Especially Spics."
This wouldn't be funny without the taboo that was strengthening at the time.
No, today's PC has nothing to do with anything "peaceful and cooperative", not when it consigns to perdition all of us white heteronormatives in fly-over country, probably more than half the country. It has no limiting principle, is frankly totalitarian, and the end game is going to be arbitrarily ugly.