So if it's a mass killing, that's somewhat antiseptic due to distance, you're OK with it. But if the killing of the innocents is up close and personal, you disagree with it?
Is that a correct summation?
Not exactly.
1. Motives are involved- aerial bombings conducted in open warfare, without deliberate targeting of civilian targets, is usually considered less morally opposable. I don't think that there are any criticisms of bombings of non-civilian targets. The a-bombs in Japan are considered a special exception.
2. Sorry I used the word "mass killing". I was referring to the sort of death squads, people running around dealing out vigilante "justice", torturing people to death, sort of thing that went around when Pinochet was in power.