All this chat about shooting people or sending them somewhere else (where? Who'd have them?) is just nonsense. Like it or not these people are a product of British society, so that society is ultimately to blame for what is happening, and needs to confront it robustly, but also in a way that attempts to understand the underlying problems. Especially in London where an ex-council flat in a less pleasant area can cost a quarter of a million, you ae effectively saying to hundreds of thousands, or even millions, or people, that they are not welcome. Society over the last generation has bred an utterly dysfunctional underclass, living an entirely anomic existence in parallel with 'mainstream' society. That is the responsibility of society and especially those who have endorsed the policies that have led to massive numbers of people being on the scrap heap, poverty line or whatever. It's pointless saying they're better off than people in Africa or wherever because they don't live in Africa and theor standards of comparison are with the rest of Western Society. And before anyone starts trotting out nonsense about 'woolly liberalism' or whatever being to blame, this country operates within entirely amoral economic strictures, and has become progressively more right wing throughout my adult life. This corrosion of society has happened on the long watch of the right wing (in which I include NuLab BTW).
This doesn't condone rioting, but it has to be seen in the context of the incredibly divided city that London has become. It is pointless expecting people to respect society who have no concept of the society that most of us like at least some part of, because that society does little or nothing for the underclass.
