This defense did not work at Nuremberg. Some of the concentration camp guards tried to use it but were hanged anyway.
Stalin: killed 50 million of his own people; Mao: killed 75 million of his own people; Hitler: killed 25 million people; Pol Pot, Castro, Lenin, and others: killed many millions more.
Hitler had the Jews, blacks, homos and infirm as his targets. Pol Pot had the intellectuals as his. Who will be the targets in the US? Whites, Repubs, US citizens, anyone have any ideas?
I have an idea - all of the gun control zealots who want to disarm the public lead the charge and act as point man on the raids.
Let them put their money where their mouth is.