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Fritz Lang's 1927 film Metropolis is commonly regarded as one of the classics of cinema, and at the time it was probably the most expensive film ever made. Only in light of recent restoration work, though, can we see how explicitly it draws on apocalyptic themes in its prophetic depiction of modern society. Partly, Metropolis reflects the ideas of Oswald Spengler, whose sensationally popular book The Decline of the West appeared in 1918. Spengler presented nightmare forecasts of the vast megalopolis, ruled by the superrich, with politics reduced to demagoguery and Caesarism, and religion marked by strange oriental cults. Lang borrowed that model but added explicit references to the Bible, and particularly Revelation. In the future world of Metropolis, the ruling classes dwell in their own Tower of Babel, while the industrial working class is literally enslaved to Moloch.
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Philip Jenkins (The Great and Holy War: How World War I Became a Religious Crusade)