I'm just saying. BYU fans can be horrible as well. I've been to well over 100 BYU games in various sports, mostly as a BYU supporter. I've heard loads of swearing, racism, and threats. I've seen fights, and people getting spit on. I've even seen child abuse.
I'm sure all that stuff and more has happened at Utah games, and games of virtually every other fanbase on earth.
It happens. Fans get way too invested into a game for children, and they do stupid stuff.