Thousands of demonstrators marched on Sunday, accompanied by drumbeats, wearing costumes and carrying signs as they urged policy makers to take global action on climate change.
People's Climate March - Sept. 21, 2014
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From left, Designer Vivienne Westwood, musician Peter Gabriel and actress Emma Thompson join an estimated 40,000 people marching from the Embankment via Whitehall to the Houses of Parliament as part of the People's Climate March, in central London, Sept. 21, 2014.
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Demonstrators make their way down Sixth Avenue during the People's Climate March, in New York, Sept. 21, 2014.
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Actor and activist Mark Ruffalo (center left) and actor Leonardo DiCaprio (center right) join participants during the People's Climate March, in New York, Sept. 21, 2014.
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People with a green heart painted on their faces attend the People's Climate March in the rain at Ipanema beach, Rio de Janeiro, Brazil, Sept. 21, 2014.