"It’s clear to me that [university authorities] haven’t transgressed here. You can debate who you ought to be sympathetic with..."

"... but in my own mind, I am confident that the students have no First Amendment claim to stay in that space."

Said Columbia lawprof Vincent A. Blasi, "who has spent decades studying civil liberties issues, said the university had articulated a 'reasonable' policy to govern protests and had every right to punish students who violate it," quoted in "Faculty Group at Columbia Says It Has ‘Lost Confidence’ in the President/The campus chapter of a faculty organization said it would 'fight to reclaim our university.' Students were undeterred by the crackdown on their protest" (NYT).

Of course, the university doesn't have to do everything within its power.