1960s is also around the time postmodernism took hold in the academe. Everything we see right now is just the conclusion of taking the postmodern idea of subjectivism and intersectionality to its logical extreme.
Everyone is unique and special.
Morals are relative and subjective.
Your life experience is relative and shaped by forces of power outside your control.
Gender is relative and you can be whatever you want to be whenever you want to be.
All of this intellectual drooling came from that time and is one of the main reason western culture is so degenerate now.