The only reason they would be in the garden, or in security work, is if that is the work they are suited to.
We know enough about human behavior to know who is gonna be good at what.
And, if they want to change, they change.
Any that cause harm to others will be eliminated, either by incarceration, or by public hanging, imo.
When this country was founded those fellas were killing their criminals.

IF we can decide things by fighting on the battlefields, we can just as easy solve things in the debate clubs.
Unless you initiate violence, then we have the duty to band together and restore the peace.
IF we want peace.

Rule by force is the disease.
As long as this is an acceptable means to one's political ends, we will always be ruled over by those most adept at hiding their killing.