Imagine you are aboard an old sailing man o'war in rough seas. A cannon breaks loose from its ropes. It rolls across the deck as the ship rolls, smashing everything in its path. The ship rolls to the other side. The cannon careers back to the other side, breaking more stuff, injuring people. The ship rolls again...
The ship is HMS UK. The cannon is called Anger. Anger born of alienation, of being poor in a society where you are what you own, of having no chance of a job, of living in s sink estate where everything is dirty, broken and ugly, where if you walk the streets, you are very likely to be stopped and searched by police. When someone in your community is shot by police, and the family of the dead man wait for hours, peacefully, outside the police station and are not given an explanation, the last tethering rope breaks.
Stored resentment against an alien society boils over, and crowd behaviour takes over. Three nights of smashing, looting, arson and murder follow, until it is suppressed by massive police deployments.
The the loose cannon of anger rolls the other way. Magistrates hand out prison sentences that will cost the taxpayer £30,000 to a boy that stole £3 worth of drink. A kid gets a lifetime criminal record for stealing chewing gum worth less than £1. A mother who stayed away from the rioting get 3 months prison for receiving a pair of stolen shorts. The cannon of anger is rolling to starboard.
People who view these savage sentences and remember that bankers who did far more damage to the economy than the rioters have got away scot-free, with bonuses even. The cannon of anger rolls to port again, this time entraining people who were never angry before.
More anger is not the answer. The answer is justice, equitableness, calmness, and rational provision of parenting skill training, youth clubs, community workers, good jobs, all provided by taxation of rich individuals and corporations who avoid taxation.