> Their claimed reasons transparently do not justify their actions
This part I disagree with. They do. And that's the point - that bad actions, even if justifiable, do not suddenly become acceptable actions. You can have all the justifications in the world and, even if true, the second you start engaging in bad behavior - you are wrong. The entire point of studying history is see all of these people making justifications. And in many cases those justifications are compelling, logical, and reasonable - yet that does not then make the actions acceptable nonetheless.
This part I disagree with. They do. And that's the point - that bad actions, even if justifiable, do not suddenly become acceptable actions. You can have all the justifications in the world and, even if true, the second you start engaging in bad behavior - you are wrong. The entire point of studying history is see all of these people making justifications. And in many cases those justifications are compelling, logical, and reasonable - yet that does not then make the actions acceptable nonetheless.