You wouldn't "incite" the bystanders to help you if someone committed battery on you?
You can't seriously be this dense.
Have you attended a University at all? Ever have to show your ID?
If I don't have my ID at a University facility as I'm supposed to - I don't belong there.
If a University COP (not just "someone")asks me to leave as a result of my not being able to prove my status as a student, I LEAVE.
Hence, no conflict with the campus security.