Most people live in a tiny circle revolving around their place of living and their work-place. If we probably tracked every single human in a city, I would hypothesize that we'd find that a high-percentage of those that regularly "stray" out of those two areas in odd times, into places that are drastically different socio-economically than their own, are actually committing crimes.

It's quite unfortunate that we've gotten to a point whereby some rather nebulous terms such as "freedom of movement" ha gotten in the way of crime-prevention.

For all we know, keeping people from committing crimes by removing their ability to would actually keep them honest and force them to improve their lot. Unfortunately, it's an uncomfortable conversation that touches on police-state territory, so we probably won't have it in the public eye any time soon.