The technology is already here, you just haven't seen it implemented on a very large scale yet. Look up Flock cameras to start. Anyone can be tracked in real-time via CCTV and LPR footage/tech on these. And they are EVERYWHERE.
The tech in VMS can now anticipate what it may perceive as threats. Weapons detection and gunshot detection, aggressive or dangerous actions, vocality, emotions, facial expressions, etc. It's preliminary in it's current stages, but it won't be long before it's refined and tuned. Cameras can recognize this and alert entities based on these triggers now. It's crazy.
Sure you can try and fight it, but when majority of it is implemented by private institutions your actions are limited if you have any at all. You can fight local government for now but the way around that is local government works with large private sector. They install Flock on private grounds, to which they have a very large footprint and local government and LEO agree to split costs with the entity as the owner. The citizens can't fight it because they are a non-profit or privately owned organization.
The more the technology gets refined, the closer we get to a Minority Report type of state. Not as exaggerated, but not that far off either. It will get worse with time.
I wouldn't put 2A rights in the same boat, but I get where you are coming from. Scary times we live in, indeed.