I know about "outside" involvement in student clashes. Been there, done that. But it usually is very short and a truce is called within couple of hours if not minutes. Political parties getting involved is also normal, not a big deal. But using firearms in university campuses is inexcusable.
In almost all universities in US, they have a zero-tolerance policy about firearms on campus. AFAIK, on US campuses, only LEOs carry firearms, no one else.
You are talking about UP, where everyone is relative of some MP and MLA and where even roadside vendors know more about politics than some Political Science post graduate from some other part of the country. Clearly you haven't met some UP wale Bhaiyya Ji.