Not wanting to sound biblical at all, but a couple of cities with no policing where criminals can live in peace without fear of incarceration (unless they step outside the boundries where capital punishment then takes over) would put an end to all our problems ,... as long as a criminal can make it into one of those cities they are free from the threat of prosecution, and free from the threat of being hunted down at any time. I bet that before too long those cities would be highly organised within themselves.
edit, anyone wanting to not go to the cities could be allowed into the city farmlands that feed and support the rest, but no further, and they would have to be able to prove themselves for even that ,... that would be like the only other option available to those that could be reformable :Y: