Reasoning? Well among other things they shot a man dead without him even putting up a fight. The police story was that he shot at them so they shot abck and killed him. The issue being that the bullet lodged in the police radio they claimed he shot, which in return resulted in them shooting, well it was police issue, they nearly killed their officer, not him. It appears he never fired a shot and the gun wasn't even viable to be shot, in that it was inside a sock.
That's part of the issue, police murdering people without cause. I don't agree with the looting of shops, that's just sily, but fuck, yeah, burn the police to the ground!

In the UK they are pretty much on the whole the Gestapo. You get some nice sensible once but it appears far too many tend to think they are soldiers not contained by law.