I think we have to change the Law first. If you mug someone, that is against their human rights, therefore you loose yours. Next a public flogging, something like 20 lashes with a cat of nine tails, and you make sure everyone in their neighbourhood know about it (the shame to their family may do some good). Next they get locked up in something approximating a dog kennel with straw in it, (even in winter) surrounded by a 20ft barbed wire fence, patrolled by someone with a water cannon. The idea is to humiliate them first, show them that that's what will happen if they go against society, then give them a very uncomfortable existance for a period of time. Then a more normal jail to get them back to being a member of society for a short period before release. Oh I nearly forgot, the wounds to their back chould be treated with antiseptic but nothing else, so they always have a good scar to remind them of their errors.
We have to show this sh*t that this is not acceptable in today's society. If you want to live in it, and enjoy the benefits, you have to conform to the rules.
Ken
PS, nearly forgot, the BMW 5 series should be crushed, and the gang owner made to push the start button.