Dr Julian Lewis: The Home Secretary said frankly that the demonstration was a premeditated and organised riot. Does he recall that, until just over a year ago, an element in the Security Service MI5 – for which the Home Secretary has responsibility – called F Branch, was responsible for the monitoring, and if necessary organising the infiltration of subversive organisations? Does not this event qualify as a subversive activity? Does the Home Secretary further recall that it was announced a little over a year ago with a fanfare of trumpets that MI5 was no longer monitoring subversive organisations? Will the Home Secretary confirm that that remains the case and that the Security Service did nothing whatsoever to investigate and monitor the situation or to advise the police about how these events could have been avoided?