This probably isn't intentional at all, but I really like that TNG/DS9/VOY doesn't mention some sort of mass incarceration system for the Federation, though other nations have it (and tend to use mass prisons as labor camps). Yeah, I'm sure there are penal colonies because there'll always be some sort of crime, but nothing that incarcerates a large population of Federation citizens. A system of justice and accountability yes, but not giant prison behemoths that keep people in perpetual state of capture rather than habilitate; except for the most heinous of crimes, lawbreakers eventually earn a chance to contribute to society, like Tom Paris.