https://i.nostr.build/qnen.jpg 
I just heard the scariest story in a while. Someone told me that they had been traveling in China and, on the way out, the border police pulled up a tool that showed countless photos of this person taken by public surveillance cameras during their visit.

These are CCTV cameras in public. Faces classified with AI. All data gathered in a central location. Don't even think for a second this is never going to happen where you live.

That's a level of dystopia I didn't know we were already in.
(Edit: JStark added for attention)