Comment by AnthonyMouse

That's because the bill of rights enumerates some of the rights people have against the government rather than the other way around. But that doesn't really get you out of it

Suppose you have a private mass surveillance system, where people "voluntarily" (i.e. because the market is consolidated and every company is doing it) give up their data to a private company that keeps a big database. Then the company "voluntarily" informs on citizens to the government (because the company wants to be on the government's good side), or imposes penalties for crimethink all on its own. Is that okay then? Should we be satisfied with it because it's not the government? Nope. Still a big problem.

The reason isn't that it's the government, it's that it's a bad trade off.

Suppose you're the "good guys" and trying to catch terrorists. There are 330 million people and 50 terrorists. If you have a mass surveillance system with only a 0.1% false positive rate, the system is totally useless. You have 330,000 false positives and investigating all those dead ends would be a huge waste of resources that would be better spent using traditional investigative methods on traditional leads.

Now suppose you're the bad guys trying to catch resistance fighters, with the same mass surveillance system. 0.1% false positive rate? Okay, round up the 330,000 people and execute them all without trial. Way cheaper than having to sift through them. Very effective system when you don't have to care about that guilt or innocence stuff.

And that's what makes the system so dangerous. It's only useful in proportion to how little you care about innocent people, and the extent to which an entity does is a thing that can change over time, so it's massively dangerous to leave a system like that sitting around without vigorous efforts to dismantle it.