You start off by disciplining children properly at school and in the home. You ban all the glorification of violence that goes on in the cinema, and on the play station screen. You teach children their responsibilties , and not just their rights. Parents of children under the age of criminal responsibility should be answerable in a court of law for the misdemeanours of their kids.
If a child uses physical force, then he should be physically punished. There should be much more retributive justice where criminals of any age should be forced to compensate the victims of their crimes.
If a criminal is sentenced to 6 years in jail, he should spend 6 years in jail, not 2 years and then out on licence to commit more crimes. The probation service obviously doesn't work, due to undermanning and overwork, so the supervision of offenders out on licence is sketchy at best.
I could go on, but I've probably offended enough people already!
Giok