RIOTING SCUM - the solution is as simple as 1,2,3.
1 Bring back corporal punishment.
2 Bring back capital punishment.
3 Throw out all the stupid namby-pamby laws and regulations which actually stop adults interacting with children.
The first two are so blindingly obvious no more needs to be said.
The third is equally sensible - allow parents to discipline their offspring as they need to, put power back into the hands of teachers and actually encourage, not discourage, adults to be involved with children.
Personally I'd ditch CRB checks altogether - after all, if you use points 1 and 2 correctly they would be far more effective than any CRB check could ever be. And, as for the suggestion an adult shouldn't be allowed to carry other people's children in the car... blah, blah, blah unbelievable. It's no wonder adults are are terrified to get involved. I heard the other day that teachers are now discouraged from even raising their voices - the world's gone mad.
Of course, if you're looking for a more radical solution. One idea would be to simply arm pensioners. On the same day you get your bus pass you receive a handgun and the legal right to use it. Those in post office queues might be a bit more jumpy, but I guarantee we'd have a new-found respect for the elderly.