Except there was literally just a piece a few days back here on HN where a Mom was arrested for letting her kid walk half a mile alone in a gated community with active security patrols. The guardrails you describe aren’t for child safety so much as adult persecution. Surveillance may help solve some crimes, but its goal isn’t safety of the people surveilled as much as protecting the power of those doing the surveilling. Research continues pointing out that cameras don’t do shit to deter crime, and its actual ability to solve crimes is limited to the humans using said tools - and with a longer history of abuses than successes, it’s a fairly safe conclusion that mass surveillance does fuck all to actually protect the populace.