Muslims in the UK now know that the police can do nothing to stop them. (Note: This video contains several profanities uttered by Muslims.)
Has anyone noticed that when Muslims are upset about something, they will attack virtually any non-Muslims, whether those non-Muslims have done anything to offend Islam? Thus, when British Muslims get upset about Palestine, they attack British police (who have nothing to do with Palestine). When Muslims around the world get upset about cartoons, they attack Christians everywhere (despite the fact that Christians had nothing to do with the cartoons).
Notice that there were a couple of peaceful Muslims in the video, trying to calm their brothers and sisters down. Notice also that the crowd completely ignored these peaceful voices. This may be a preview of things to come. When Islam becomes powerful enough to fight the West, many Muslims will follow Muhammad's command to attack non-Muslims. There will, of course, be some peaceful Muslims who try to prevent Islam from attacking the West. This video shows who's going to win that argument.
On a different note, can anyone imagine what would happen if Muslims could channel this violent energy into something positive (e.g. helping the poor, bringing human rights to Muslim countries, etc.)? Sadly, Muslims only seem to get excited when someone offends them.