This is a 1941 article in Harpers, and be warned parts of it don’t read as politically correct today.

Kind, good, happy, gentlemanly, secure people never go Nazi. They may be the gentle philosopher whose name is in the Blue Book, or Bill from City College to whom democracy gave a chance to design airplanes—you’ll never make Nazis out of them. But the frustrated and humiliated intellectual, the rich and scared speculator, the spoiled son, the labor tyrant, the fellow who has achieved success by smelling out the wind of success—they would all go Nazi in a crisis.

Believe me, nice people don’t go Nazi. Their race, color, creed, or social condition is not the criterion. It is something in them.

Those who haven’t anything in them to tell them what they like and what they don’t—whether it is breeding, or happiness, or wisdom, or a code, however old-fashioned or however modern, go Nazi. It’s an amusing game. Try it at the next big party you go to.

Harpers, 1941

What’s interesting to me is the idea that members of the American upper class having garden parties at the time seemed to contemplate the possibility of America itself “going Nazi”. And it is the whims of a very small group of upper class people who seem to get to decide whether the rest of us in the vast masses “go Nazi” or not.