I find it sad that the officer could be a "joke around the precinct" - presumably incompetent and apparently eager to abuse their power - and still be an officer.
http://petapixel.com/2014/02/04/police-officer-threatened-ar...
The ironic bit, that each group will tell how other group is bad by doing exactly the same misconduct.
[1] http://jonathanturley.org/2014/02/12/eight-police-officers-f...
[2] http://blogs.ocweekly.com/navelgazing/2013/12/kelly_thomas_f...
And beside that, it's certainly the case that incompetent assholes should be pushed out in other circumstances. It is simply far less crucial when it's not as likely to end people's lives.