One wonders if Hitler's Nazis had succeeded and had eliminated every last Jewish-communist-international banker on Earth, just who then would they blame for their problems ?
The Nazis would have kept on killing the 'unfit' until the end of time, but they never credited any of the 'unfit' with being the invisible and super-smart enemy that so hobbled the Aryan Race.
The defectives were just inept and so life unworthy of life --- the Jews were only life unworthy of life because they were so adept at exercising pure evil.
Like Man-oriented Progress in general, with its real life microbes at the bottom of life, Hitler's Hyped-up idea of Progress desperately needed something totally bad and useless at the bottom to contrast with (and hence confirm) the relative good and useless humans at the top.
This ultra high valuation of math-based concepts of symmetry over the joyous yet messy diversity of actual reality is yet another evil sin Hitler got from the theoretical physicists ---- the reason why he and Einstein had much more in common than either was willing to admit...