And to quote another poster: "Not too hard to relate it to carry issues. Anyone who chooses to carry a firearm, or other weapon, and uses it, will go through many of the same processes. They're all homicides."
"To spit on your hands and lower the pike; to stand fast over the body of Leonidas the King; to be rear guard at Kunu-Ri; to stand and be still to the Birkenhead Drill; these are not rational acts. They are often merely necessary." Pournelle