Cops don't have fucking quotas, I'm so sick of hearing that excuse.

On the other hand, this cop seems like a professional douchebag, start a petetion online or something just for the hell of it, and use the emails to try and get stories of people who have had their cases dropped or proven not guilty, compile a list of examples, write a short paper about how this officer is doing more harm than good on the streets (ie.s not really protecting people, just freaking them out that much more/making them paranoid to drive instead of feeling safe.) Send all the documents his supervisor, and watch the shit hit the fan.
You could PROBABLY take those documents to some local news stations as well, but I'd venture a guess that most of the general public supports what he is doing.