The hopefully we'll be able to at least narrow down the list of suspects to the people who entered the bathroom around the time they the murder took place.
Surveillance often doesn't directly capture crime on camera, but is rather used to identify who traveled to and from the crime scene around the time of the incident
No? If someone broke into your car as stole your luggage, the surveillance camera might not directly capture the thief breaking into your car. But if the camera recorded someone entering the parking garage and then exiting the garage carrying your luggage a few minutes later, that's strong evidence is it not?
You're missing the part where, for that to work, we have a government with access to a massive surveillance system capable of identifying and tracking the population at scale.
And you're missing that, instead of specifically identifying a specific individual doing a specific thing, this network would be used to place under suspicion, investigation and possible arrest, people who's only documented action was "being somewhere."
Oh, and while your example is "committed a crime", that same network could easily be used to identity and track people who were, say, coming and going from protests. Or libraries. Or voting.
> investigation and possible arrest, people who's only documented action was "being somewhere."
In the example above, the police wouldn't arrest every single person who entered and exited the parking lot. They'd arrest the person who walked out of the lot with your stolen luggage.
> Oh, and while your example is "committed a crime", that same network could easily be used to identity and track people who were, say, coming and going from protests
There's no right to have your public demonstrations off limits for recording. The whole point of a protest is to be seen. If someone is concerned that they will be associated with some group or cause because of their decision to protest, then they seem to have a fundamental misunderstanding of what a protest is.
> Or voting
You realize the government already has that information? Voters literally filled out ballots and delivered it to the government. They don't need a camera to know who voted, they have the ballots.