What is the importance of Nazism in the short-story collection, The UnAmericans?

Nazism is a political system of government and social engineering that came out of Germany in the 1930's and led to the Second World War in the 1940's. In the same way as Communism is referred to several times in the collection and affects elements of the various narratives to different degrees, the same is true of Nazism here. It appears in fewer stories, but is nonetheless a powerful and defining presence in those pieces in which it appears and even in those in which it doesn't: because one of the targets of Nazism's drive towards racial purity was the Jewish race, and because millions of Jews died as a result of falling victim to that drive, the specter of Nazism and the suffering it brought infuses, through implication, virtually every piece in the collection.

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