Historically police where never allowed on campuses for non criminal proceedings. Campuses where essentially a municipal jurisdiction of their own. This only changed during and following the student protests of 2012 (and later, for example at Laval University in Quebec only in 2019 - and now they want to take that back).

So no, not LMAO, and no that’s not just “their job”. This was a conscious effort to reduce the autonomy of student and faculty members after various waves of protests. Something that has historically almost always been respected (and always made big news when it wasn’t).