"The radio show was no more immune to criticism than the comic books were. Some critics claimed that Superman reflected the concept of “der Ubermensch”, a German term that could be translated into “the Superman.” The term was coined by 19th century German philosopher Friedrich Nietzsche, who argued that certain people could transcend the influences of religion, culture, and conformity to become enlightened supermen. According to Nietzsche, the person could reach this pinnacle by rising above the pestering of the masses, who buzz like “flies in the marketplace.” After Nietzsches death, the German Nazis twisted his words to mean that their ideal of the blond, blue-eyed German (what they called Aryan) could rise above all “inferiors” to create a dominant race of supermen. The criticism that Superman manifested a Nazi concept showed a complete lack of understanding of the character. While striving to create a popular superhero who would attract a mass audience Jerry and Joe had forged Superman to embody the best parts of the American way of life and to raise awareness of un-American” attitudes. The notion of un-American behavior applied not only to gangsters who broke the law, crooked politicians who violated the public trust, and wealthy industrialists who exploited workers, but also to foreign powers that threatened democracy. So Superman’s creators-too busy to be sidetracked by the critics-aimed their superhero at the looming Nazi threat in Europe."
January 1, 1970
https://en.wikiquote.org/wiki/Superman