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IntroductionOn April 15, 1923, eight marathon dancers, aged nineteen to twenty-eight, outran the law for a chance to make history. For twenty-nine hours straight, as weaker contestants limped off the floor, they had twirled and swung each other’s bodies to the fox-trot, two-step, and bunny hug. At midnight, New York police enforced a law that put a twelve-hour cap on marathon activities. They ordered the kids to cease and desist, but the dancers wanted none of it. They da…