Similar services already exist and are sold to cities; I've seen articles about them for a year at least (in serious publications). I'm not sure they are 24x7 or that they have the resolution to read faces or license plates, though obviously that tech exists, but it's happening now.

In one article, they talked about how they record the video, and that later if they are investigating something that happened at location X, they can go back and track all the cars and people that came and went.

> How would the world respond? How would American respond? Would we collectively decide this is not something we want and pass laws to stop it?

You can see the response of Americans right now, which is nothing. My hypothesis is that the public is reactive to sensational issues (real or not), and is almost never proactive. The public lacks the time, understanding, attention and wisdom to be proactive about even a tiny fraction of public issues; that's why we need experts and "elites" in representative government, not pure democracy. Right now those elites are letting us down, badly, and on many issues.