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A protester dressed as snowman takes part in the "Fridays for Future" demonstration in Berlin during a protest for climate action on September 20, 2019, part of a global climate action day. (Photo by John MACDOUGALL / AFP) (Photo credit should read JOHN MACDOUGALL/AFP via Getty Images)

A protester dressed as snowman takes part in the "Fridays for Future" demonstration in Berlin during a protest for climate action on September 20, 2019, part of a global climate action day. (Photo by John MACDOUGALL / AFP)        (Photo credit should read JOHN MACDOUGALL/AFP via Getty Images)