These are the fans that see the U as the antithesis of the LDS Church (embodied in BYU)
So their hate for everything LDS is directed by being "fans" of the U, where in actuality they don't know too much about the U's football program they just revel in anything that detracts from BYU such as beating the Y, inclusion in the PAC XII, etc
These are the fans that take a dump on the west concourse, the lady that flashed the crowd at the TCU game, the students who had the blow up doll and said it was Max Hall's mom, suspender boy (who walks on to a field and says smack to an opposing coach?) Even some of their players are punks; Viliseni Fauonuku,"Don't start nothing, won't be nothing. I swear, we will legally hurt you every play."
And we have Urban Meyer to thank for it and Kyle has done nothing to get the rivalry back to a civil one.