Reason's Hit and Run blog on parliament's noises about regulating social media:
It is certainly true that the rioters have used social media to organize themselves. The difference between their free-flowing communications and the cops' much more centralized system makes it clear just how dramatically a hierarchy can be outperformed by a network. But it takes an especially stunted mindset to see that contrast and conclude that everyone needs to be herded into a hierarchy. Maybe, just maybe, a decentralized problem demands a decentralized response.
If social media made it easier to riot, they also made it easier to survive the riots, and they did so at a time when the institutions that were supposed to ensure survival were in disarray.