Except that murder is justifiable if it’s against someone that murders for pleasure and twisted benefits, like Thompson. Murdering someone with no reason or because of bad reasons is bad, and Thompson did that, so killing Thompson is good because he gave a good reason to do so. If someone’s gonna kill you, you either kill him or get killed yourself. If a genocide is going to get to the power, the only sensible thing is to kill him and all those who are with him because these people won’t understand by the words and not even by political or diplomatical means, because they won’t listen to anyone else than themselves.