BERLIN, GERMANY - NOVEMBER 29: Activists participate in the Global Climate March in front of the Reichstag Building on November 29, 2015 in Berlin, Germany. The COP21 2015 Paris Climate Conference will begin on November 30, though due to the recent Paris terror attacks French police have banned activists from marching in Paris. Large-scale marches are instead taking place in other cities, including today in Berlin. (Photo by Carsten Koall/Getty Images)
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Getty Images News Carsten Koall