Listening to the Middle Class Twats with their solutions gives you a clue at why this is happening. Here are some of the comments made by the really clueless. Like the Prime Minister, Deputy Prime Minister, Home Secretary and most of the opposition. Even Members of Parliament for the areas where the trouble is.
Parents have to know where their children are. 
Yes they do know, they sent them to the Sony shop to pick up a TV.
Parents have to keep their children indoors at night. Which means the kids can't stock the larder.
These children have to realise they are harming their future. These kids are often in families where their parents are on benefits, working in a dead end job and don't think they have a future to lose.
Water cannon aren't the way we police in Mainland Britain. Fine to use it in N. Ireland. Or just allow kids to run riot.
Those caught have to know if they're old enough to do this, they're old enough to face the consequences in court. This gem was brought to us by the Prime Minister who obviously is clueless about the law. Even those who are old enough to be charged and convicted will get very little punishment. We're yet to see anyone brought to trial, but with jails full and them letting out criminals on the street what can be done?
This is mindless thuggery. No it's opportunism. They see a chance to go wild, have a good night out rioting and pick up some new trainers, clothes, electrical goods, food, alcohol or plain cash out of the tills.
And these idiots run the country.
The immediate solution is to hit the rioters hard to make them respect the police and rule of law. Water cannon, rubber bullets and if required the army. The time for looking like the situation is under control is past. No one is convinced it's under control. Unless the rioters are made to stop, they will decide when to stop. And no guaranty they won't start up again.
Then find them work to do. If so many 18-24 year olds are unemployed, get them sweeping the streets, mowing the lawns in parks, removing graffiti, looking after old people, running errands for the old and disabled. There are lots of jobs they can do in their communities. If they don't or fuck up they lose benefits. This could be expanded to include out of work parents.
I have a daughter who hasn't worked for over 10 years and my first wife hasn't worked since we separated. Except a few jobs in the black economy. Both able to work, choose not to and live on what the State provides. Or I provided until my daughter was 18. Even then my first wife tried to get me to support her. Until the Social Services told her, I no longer had to.
They are 2 of 100,000s.
I'm sure many of the unemployed would welcome something to do, it's just hat private industry doesn't need them and the Public purse can't afford to keep them in a job. so keep them on benefits which is cheaper. This has been the policy for 30 years and now we see the outcome.
Americans take heed. This is the cost of cutting off 5% of your population. And in the US the access to guns is far easier. Imagine these rioters with guns.