In a proper world, where proper people live, unencumbered by layer upon layer of a nanny state "who know best", you would simply find the miscreant(s) responsible and gently shoot him/her/them all in the back of the head.
There will always be wrong 'uns in this world. There is no point in trying to rehabilitate them. Take them out of this world and out of the tax payers pockets.
Simple.