2011 Riots, Tottenham, London, United Kingdom

Incitement
There were reports that the incidents had been incited using a variety of communications media, including BlackBerry Messenger broadcasts. Research In Motion (RIM), the maker of the BlackBerry, announced that it was cooperating with police. The Metropolitan Police considered whether to shut down the service in an effort to hamper coordination of rioting.
A hacker group called "TeaMp0isoN" hacked and defaced Blackberry's official blog after RIM offered to help police.
The police stated that some messages were posted on Twitter that were "inflammatory, inaccurate", and they were considering arresting people for inciting violence.