Kicking ass, an “unpleasant job”?
It depends !!.....
But even if I have my empathy, I would also like to believe I would not hesitate to blow away someone taking the life of innocent people, like that asshole Fort Hood shooter. I also wouldn't waste much time a trial for such people.
(LOL, But I also must admit that I have seen people who I think should get an ass kicking on simple principle. Thankfully, my powers are limited! )