In my 4 years at UNL I saw plenty of stuff on Saturdays (inside and outside of the stadium) that would make a fan of any team ashamed of. And no....it wasn't me or my friends...or just students. Here are just a few things that I remember off the top of my head.
1) Spitting from upper rows down onto pockets of opponent fans (I think KSU game)
2) In a bar after the game, some idiot just sucker-punching a Missou fan from behind
3) 2 men (non-students) piling wrappers and trash in the hood of a Texas fan's coat.
4) Pre-game in a bar, some guy just whipping it out and pissing on a CU fan's leg
5) Leaving a game, Husker fans running up and over (standing on) a car that had Colorado plates.
It's everywhere....don't think the morons aren't here.