Dynamic racially "impure" Manhattan : Sterile racially "pure" Auschwitz

Hitler, along with much of the educated world at the time, felt that America was certain to go down the tubes because of its free and easy racial mixing, above all in Manhattan.

Hitler was convinced that once his murderous programs had made Germany fully Aryan and fully racially pure, it would soar even higher than it already had, in culture and in technology.

The results of WWII - and the seventy years since - hasn't confirmed those beliefs, far from it.