ribit,
"...bad cops happen about as often as bad folks in any other occupation."
Probably right, but cops have guns & the blue shield of silence.
Spousal abuse is higher if you're married to a cop.
Research suggests that family violence is two to four times higher in the law-enforcement community than in the general population.
more:
http://www.theatlantic.com/national/archive/2014/09/police-officers-who-hit-their-wives-or-girlfriends/380329/