The third party doctrine was one of the final nails in the coffin of the 4th amendment. It was when the 9 high priests of tyranny (aka the supreme court) decided the Government can spy on anyone without a warrant as long as they are getting the surveillance data from a company rather than doing the surveillance directly.
The catch is you have to "voluntarily" share the data with a company first. Any time someone clicks agree on some terms and conditions, they are likely "voluntarily" agreeing for their data to be collected, packaged up, and sold to the highest bidder.
Now some of that data has been intergrated into Flock Safety's surveillance network subscription service for law enforcement. They can search for people by their crypto wallet address, telegram handle, discord ID, and many other pieces of data.
Check out this screenshot from the youtuber Business Reform's presentation at Monerotopia showing Flock's inferface and some of the options. Flock doesn't just collect license plate numbers, they catalog every single detail about someones vehicle.
They already have 100,000 cameras up feeding this massive database with real time data that they combine with data sourced elsewhere. Flock and Amazon Ring almost joined forces to create a dystopian nightmare but public backlash over their super bowl ad led to Amazon canceling their deal wirh Flock.
This is a great demonstration of the people's power to push back against surveillance, but much more pushback is needed.