Headscratchers / Star Trek Voyager S 1 E 7 "Ex Post Facto"

• Do murderers also spend the rest of their life incarcerated as well? The Baneans don't want Paris to be taken away by Janeway, but I don't think they never state that he's serving a sentence or must stay on Banea forever. If murderers are allowed to rejoin society, it seems dangerous for them to suddenly have all their attention consumed by a memory. What if they're operating machinery or crossing a street or doing something else that could endanger the public when they suddenly stop paying attention to everything around them?