An activist takes part in a rally held the day before the start of the Paris Climate Change Conference (COP21), in San Jose, Costa Rica, November 29, 2015.
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Protesters dressed as Santa Claus take part in a protest about climate change at New York City Hall steps in lower Manhattan, New York, November 29, 2015, a day before the start of the Paris Climate Change Conference (COP21).
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A man wearing a U.S. President Barack Obama mask takes part in a silent march calling for ambitious action to tackle climate change, in Bogota, Colombia, Sunday, Nov. 29, 2015. The group urges decisive actions from world leaders who will gather in Paris for the 21st Conference of Parties (COP 21) of the United Nations Framework Convention on Climate Change. (AP Photo/Fernando Vergara)
A demonstrator with an anonymous mask is seen during the forbidden COP21 demonstration on November 29, 2015 in Paris, France. The demonstration was banned after the Paris terror attacks on Friday, November 13th. Nevertheless, thousands of people gathered to protest against global warming ahead of COP21 and an estimated 100 people were arrested after fighting with police. (Photo by Aurelien Meunier/Getty Images)
Photos of the day - November 29, 2015
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