The Duggan connection is as yet opaque although very likely catalytic.   

The police are in a thankless position - at present they are I think being criticised for delay but it would have been easy for them to over-react and either way they get it.   I am not sure that I see this as being like their inflammatory and dishonest behaviour on other occasions - but there is a lot we don't know.

There is a lot of talk about the flash mob analogue - facebook twitter and text messaging apparently easing the spreading of information, but I have not yet heard anyone serious say that there was an organised co-ordination of assembly.

Most people are sympathetic to Syrian demonstrators, to the "Egyptian Spring" and to the revolution in Libya - but where is the dividing line? It is surely true that the overall trend in the UK and the USA for 30 years has been for the rich to get richer and the poor poorer. The assets of the Russian state finished up largely in the hands of criminals who had at best been black market traders.   The answer cannot be "God save the squire and his relations and keep us all in our proper stations", so at some point a stacked deck of cards needs to be changed for a new one, whether the organisers of the crooked game like it or not.   

This may or may not be the time for that, but we don't really yet know with much clarity what was in people's minds.