[VladRussian]

>I wouldn't be too quick to write all cops off as bad. There are definitely a good number of "good" cops.

the system easy makes bad even out of the good ones:

http://en.wikipedia.org/wiki/Milgram_experiment

"Ordinary people, simply doing their jobs, and without any particular hostility on their part, can become agents in a terrible destructive process. Moreover, even when the destructive effects of their work become patently clear, and they are asked to carry out actions incompatible with fundamental standards of morality, relatively few people have the resources needed to resist authority."