Demonstrators snarl traffic as they try to block an entrance to the Holland Tunnel during a solidarity protest Wednesday in New York City. Michael Abbott/Getty Images hide caption

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Madison Mayor Paul Soglin addresses a crowd of protesters on Martin Luther King Boulevard in Madison, Wis., during a protest of the shooting death of Tony Robinson. Andy Manis/AP hide caption

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New York City Police Commissioner Bill Bratton speaks during an NYPD swearing-in ceremony in New York on Jan. 7. He confirmed to NPR today that there had been a work slowdown by officers in the weeks since two police officers were shot dead. He said the matter was being corrected. Seth Wenig/AP hide caption

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Members of the St. Louis Rams raise their arms to protest the grand jury decision in Ferguson, Mo., before a game last month. The players faced a backlash from St. Louis police and have been asked to apologize. L.G. Patterson/AP hide caption

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Protesters shout slogans in New York City's Times Square on Wednesday. A New York City grand jury has decided not to charge a police officer who killed Eric Garner with a chokehold while trying to arrest him for illegally selling cigarettes. Adrees Latif/Reuters /Landov hide caption

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A census by protesters estimates the main protest camp in Hong Kong is home to about 2,200 tents, but most are empty these days as crowds have dwindled. Frank Langfitt/NPR hide caption

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Pro-democracy protesters chant slogans as they gather next to the central government offices in Hong Kong on Wednesday. Alex Ogle/AFP/Getty Images hide caption

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Demonstrators gather near Columbus Circle before the start of the People's Climate March in New York Sunday. Organizers are hoping 100,000 people worldwide might participate in the rally. Craig Ruttle/AP hide caption

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A helicopter carries VIPs to the Brazilian Grand Prix in Sao Paulo in 2010. Politicians taking expensive helicopters and government planes have generated controversy in Brazil. Jefferson Bernardes/AFP/Getty Images hide caption

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Erdem Gunduz (center) stands in Instanbul's Taksim Square early Tuesday. After weeks of clashes with police, many Turkish protesters were inspired to emulate Gunduz, and stand silently. Petr David Josek/AP hide caption

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People run away from tear gas which is thrown by riot police during a clash at Taksim Square in Istanbul, Turkey. Tolga Bozoglu /EPA /LANDOV hide caption

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Relatives of the Egyptian policemen who were killed in Port Said grieve during their military funeral in Cairo on Sunday. Amr Nabil/AP hide caption

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Protestors are storming central Delhi streets, calling for women's safety following a brutal attack on a young woman last weekend. Sajjad Hussain/AFP/Getty Images hide caption

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There were also anti-American protests in Kabul on Sunday. Massoud Hossaini /AFP/Getty Images hide caption

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Protesters march outside the Japanese Embassy in Beijing on Saturday. Tension escalated, sometimes to violence, in cities across China after Japan bought the disputed islands from a private Japanese owner. Louisa Lim/NPR hide caption

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