Protest is generly seen as criminal or crime adjascent behaviour in the US in my experience. The average person is unable to see the bigger picture that protest slot into and even in cases like this where nobody is inconvenienced somebody or some institution will cry about it.

I guess the graduation ceremony is coming up or something. At least that's the excuse I heard.

Students are walking out of class and "occupying" spaces, joined by non-campus outsiders sometimes. Police are calling it trespassing and arresting them if they don't disperse.