I have been to several games at BSU and while each time we've had the crowd chant the F** You Joseph Smith chant at us.....it was pretty cool to see a lot of their own fans try to police this behavior. You could tell a lot of the fans didn't approve.
One time three BSU fans kept mooning our section, or they would do obscene sexual gestures (which I had kids and was a little put off by)...It was pretty stupid given they were grown men. Again, the crowd around them complained and encouraged them to knock it off and eventually got security.
So while some of the worst fans were there, it is one of the only venues where their own fans policed the bad behavior.