That's exactly the danger..... X is already happening, so is Y and so is Z, this is just a tiny incremental step and nothing to worry about. Until you go from 20 years ago when only a villainous few were the subject of hand written reports, to today when all of us are being monitored online, by a smart meter, and by CCTV 24 hours a day. Each step is possibly insignificant on its own, but added together, it's blanket coverage.This will shock you...
People do watch you as you walk down the street. People watch you as you drive around, and they don't know your name. Why would facial recognition be any different? Stand on a street corner and count the number of people that walk past you in five minutes. These names flashing up in front of some imaginary operator will mean nothing. The sheer amount of data actually provides anonymity to the masses.
Unless you have a marker on you you will be ignored.
Hate to say it, but the police already use data storage, management and control systems operated by private company's.
The thing is, as much as you protest and shout "Wibble!" at the top of your voice, there are safe guards in place. Take for example NLEDS, the government have published this:
Honestly, the State really couldn't care who you are, you are not important enough to even register to them. You are a tiny insignificant insect to the public sector, as long as you are paying your money they really don't care about your privacy, because there is no reason to!
This of course presumes you are not a nefarious type, whom the police take an interest in.
The duty of the government is to find and prosecute those few individuals who commit crimes, it isn't their job to monitor all of us just in case a relatively tiny minority of us do wrong.
It's lazy, counterproductive and smacks of totalitarianism.