First off, they are wearing Canucks gear. You don't spend 200 bucks on a jersey without being a fan.
Secondly, why do they have to be black???
First, not all jerseys cost $200. In fact, the majority of jerseys sold are cheap replicas.
Secondly, people in Vancouver have been planning on rioting after game 7 for weeks if not months. A lot of them were not hockey fans, but just wanted to get in on the riot so they could loot and steal s***, just like most all modern riots in North America. Remember LA? A lot of people left their houses when they heard the news on tv or the radio so they could go down to the riots to loot and steal s***.
Hell even in the pic on page two of this thread, you can see two kids in front of a burning car, and in the background you can see some blonde girl that does not look like she came from the hockey game or even knows what hockey is, coming out of a high end store with a smashed in front window with her arms filled with s*** she just stole.