Roughly speaking, people have one of four positions regarding the activity of killing people in the name of some communal interest (as against personal vendettas and so on). There are those who regard killing as a fine thing (Nazis, early Communists in may countries where Communism took over whenever that was, Islamists). There are those who are indifferent: they don’t see killing as an imperative, but nor do they see any problem. There are many of these. Then you have the people who think killing is bad, but sometimes it’s a necessary evil. I’m of this camp, as are many of the people in the democracies, altho their numbers are being eroded in favour of the fourth group, those who regard killing as always wrong, period. http://yaacovlozowick.blogspot.com/2008/03/on-killing-people.html
See also: How to Succeed in Bloodshed
http://thecurrent.theatlantic.com/archives/2008/03/how-to-succeed-in-bloodshed.php