Sure, here it is
"At around 11:30 p.m., CSOs asked a male student using a computer in the back of the room to leave when he was unable to produce a BruinCard during a random check. The student did not exit the building immediately.
The CSOs left, returning minutes later, and police officers arrived to escort the student out. By this time the student had begun to walk toward the door with his backpack when an officer approached him and grabbed his arm, at which point the student told the officer to let him go."
Had the cops who arrived "a few minutes later" just let him leave as he was told to do and was doing, there wouldn't be a story here.
Had the student left immediately as asked, before CSO called UCPD, there would also have been no story. He had plenty of time to leave in a reasonable manner. He didn't.
He, in fact, got exactly what he was seeking; a confrontation with authority. If the University was smart, they would expel him for a semester and institute a couple of required seminars on compliance with campus security and university rules for the students.
You are undermining your point. Why was he still there, "minutes later"?
You posted, in part: The CSOs left, returning minutes later, and police officers arrived to escort the student out. By this time the student had begun to walk toward the door with his backpack . . .
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I read this as the student didn't produce ID and was asked to leave, which he did not do. Minutes later (we don't know how many, but the other cops had to come from the donut shop, so it had to take a little while) the guy has not left, nor is it clear that he was leaving, only that he had BEGUN to walk TOWARD the door. I can neither accuse nor defend the campus police without know a lot more facts than the student newspaper decided to report, but the student was in the wrong by not producing his ID (if he had it) and then not leaving immediately when told to do so by the officer who had no way of knowing if he was really a student or not, since he didn't provide his ID.
And failing to leave property when told to do so by someone in authority IS a trespass. It isn't cured by STARTING to leave later.