From what I hear (and I mostly believe it) it's not the hockey fans that are rioting (a bunch of the fans wearing jerseys were saying how it makes them look bad) but just hooligans. I mean if you watch the video its just a bunch of teens and young adults wrapping their faces up with shirts smashing things. You'd think that having them do it on video allows the police to press charges but they don't seem to do much save for the occasional beat-down.
It sucks to live in a city that riots though, think of all those small shop owners. I would grab a bunch of friends and stand in my shop with baseball bats and intimidating items lol. but yes, shameful to see, police shoulda brought out the beanie shotties.