The reason the student protests of the 1960s didn't lead to political correctness was precisely that — they were student movements. They didn't have any real power.
I don't know what Graham thinks 'political correctness' would have looked like in the 1960s – most Americans still thought women's lib was a joke, many Americans were fighting to preserve segregation, and nobody had heard of such a thing as a gay rights movement.They literally started sending fake "remigration" tickets to anybody with a foreign sounding family name, exactly what the nazis did to jews in the 1930s.
https://www.t-online.de/nachrichten/deutschland/parteien/id_...