Incitement to riot is an offence in itself I believe. Let's hope idiots like this pay the penalty too.
Twitter should be shut down at the moment
I have two born again Christian relatives who belong to a slightly odd ball cult although I find their views make more sense than many other religious people I have met. They consider social networks to be evil, have to say on this evidence yet again they have a valid point. Maybe have Twitter suspended for a few weeks might be an idea.
I don't consider it evil - indeed it's helped the fightback by Londoners but in this instance it surely would help police if it was blocked for a couple of weeks ?