What's with the riots?

I honestly don't think they are even real sports fans that do the rioting. They are the same jerks that would be out there (somewhere) drinking and getting wasted, getting into fights and stealing things if it were any other night. They just all happen to be in the same place on nights like this because they see an opportunity to act like an a$$hole among the company of other a$$holes. Idiots attract like moths to a flame I guess.