It only takes one to start a movement, as this video clip from this year's EXIT Festival proves to us. A man concentrating on dancing only with his one hand inspires a whole group of festivalgoers gather around him to join in. He doesn't seem to pay anyone any heed however, unmoved and undeterred by those animatedly dancing with their hands around him, until halfway through the video where he momentarily breaks into a smile. It's amazing how one simple move can draw so much attention.

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