The splendid blond beast Book

Probably not the cheeriest of holiday reading, but a fine account of how US financial, read: political, interests basically giggled and skittered around morality by investing in and then largely turning a blind eye to Nazi atrocities, especially that one you may have heard of, the Holocaust.
It's uncontroversial that American financial interests like Ford and others poured money into Nazi Germany. It's also uncontroversial that the US government protected prominent Nazi scientists and other various assholes, often reinserting them back into Germany vs the Soviet Union or bringing them to the States, setting them up with nice pensions and comfortable lives. All uncontroversial, but I bet the average American doesn't know all that, making this a great gift for the holiday season for your most beloved unsuspecting patriot.
Simpson does you one better and ties all this informal indulgence to the Armenian genocide waged by the Ottomans in the Teens, arguing that the policy was first formulated there. What policy? "Oh, we care. We really do. But the money is nice, frankly, so fuck off, persecuted minorities!"