The idea was to seek spots in the city where public web cams are pointed at, and paint QR codes on the ground at those spots (using a template), linking to the camera stream. So when curious passerbys scan the code, they see themselves in a camera stream and feel "watched".
Gotta tag some political organization on the banner which makes it illegal to remove.
I don't think many of us would object to video surveillance actually doing that. So, it's not even an immoral thought to many of us.
The problem is LE using it for almost any other purpose whatsoever.