Some major cities ranked by surveillance cameras per km

Not what I would have expected:

1. Seoul

2. Paris

3. Boston

4. NYC

5. Baltimore

6. San Francisco

7. Tokyo

8. London

9. Chicago

10. Philadelphia

11. Bangkok

12. Washington, D.C.

13. Milwaukee

14. Singapore

15. Seattle

16. Los Angeles

The difference here between Seoul and Los Angeles is almost 4x.  Mostly I am surprised that London and also Singapore are so low.  Here is the paper, via the excellent Samir Varma.

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