If you are interested in the new forms of street surveillance then have a look at this. You may have to cut and paste the link into your browser
This picture was taken with a 70,000 x 30,000 pixel camera (2100 Mega Pixels.) These cameras are not sold to the public and are being installed in strategic locations. The camera can identify a face among a multitude of people. Place your computer’s cursor in the mass of people and double-click a few times. Scary sharp!! George Orwell must be smiling somewhere out there.