There is an un-liberal trend on campuses today concerning free speech, safe spaces, trigger warnings, de-platforming, and the like. ]
Thats it.
Its being called cultural marxism. Its defenders cry 'no such thing'. They say things like
"Nonsense, We all studied Marx in economics class"
It is real. It did not happen by itself. Certain professors are now indoctrinating, not teaching. It is growing and each year that graduates enter media, politics, and corporations. They are everywhere college graduates go to work. Let that sink in.
It is a sea cultural change. Consider Gilette's 'woke' item (TV commercial) about "toxic masculinity", for example. It cannot be denied. The fact that this sea change is being denied is another problem, and telling.
But the classic liberal philosophy that rigorously defends free speech and the like
The classic liberal philosophy that rigorously defends free speech and the like is under growing attacks on college campuses,
and now in the streets. Colleges traditionally were the place free speech was cherished, for the exchange of ideas, and weeding out bad ideas. That is dying on campus today.
The trend you point out is destroying free speech. Concerned professors are documenting the "trend". One prof told Bill Maher it was in the eighties that he first noticed the trend, where students and staff began observing "politically correct" speech limitations. Now they are rioting on campus to suppress speech. The trend you point out is a bit more than a trend. It is multiplying.
Another variant product of this: Footage of diners being attacked by a violent mob for remaining silent rather than saying "Black Lives Matter". Did the MSM show you that?
This bigger trend, as you put it, cannot be denied. "No Safe Spaces" is the first documentary exposing this threat, AFAIK.
How did this begin? Who started it? From where did it come??