A pdf book that dives into the issues U.S. law enforcement agencies face. Naturally there is a great emphasis on organizational behavior, efficiency, constitutional practices, and racial matters. What caught my eye was the discussion about corruption: not that it was there, but that it seemed to merit only a passing mention.
Reading through the report, one gets the impression that U.S. law enforcement is rather troubled. What would do a real service would be to benchmark U.S. police practices both between US cities and between US cities and the police forces overseas (and not just Japan, Australia and Europe.)