While the write-up linked was well written, it didn't really say much of anything. I'm confident that if you asked 100 people about the rioting (including those rioting) you'd get 100 different reasons.

I don't really have much to say on the subject, except that it's tragic and sad. I did try to brush up on the facts yesterday, but even after a half dozen articles I was nowhere. Everything I read on the BBC's site was just composed of little bullets that contained a fact here and there but didn't really explain anything. Even when reading about the shooting that took place before the riots - couldn't find any good reportage at all. It was all just a summary sort of like this: passenger in a minicab shot by police during a scheduled operation.