I'm out of the uk at the moment and only get a little while per day to check the internet but from what I can see its a narrow minded view that blames ethnic minorites in these cases. Sure in some instances that can be the case but on the whole I think its more to do with location than anything else. You look at the vast majority of people affected and its inner city residents who on the whole tend to be round the bread line. The likelyhood is that the majoritiy of minorities are 3rd or 4th generation in the uk now which makes them more british than some of my friends!!
Most of what seems to be happening is down to inner city folk on a copy cat rampage that resulted from a peaceful protest that went out of hand. I guarantee that 99% of those involved have no idea what kicked all this off. Ethnic communities will always mass together, thats human nature to be near your own kind, the main problem here is the standard of living that these inner city people have to deal with. It takes a very determined person to break the chain and try to get clear of these places, crime (quick cash rewards), poverty etc. Just look at the projects in the states. Thats what we're heading towards at a great rate of knots and our police force is just not equipped to deal with it.