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The myth of the "Roaring Twenties" and of 1920s Berlin is rearing its head again. From September, the Stadtmuseum Berlin hosts the exhibition "Dancing on the Volcano. The Berlin of the Twenties as Reflected in the Arts" aiming at showcasing "the mood and social climate in the 1920s, particularly in the pulsating metropolis of Berlin".Sadly, there seems to be no historical awareness of the "legend of the Twenties" (in Helmuth Plessner's words) and its retrospective, nostalgic quality.