Demonstration

Pro-democracy demonstrators display placards as they gather near a ceremony marking China's 65th National Day in Hong Kong on October 1, 2014. Hong Kong protesters who braved thunderstorms to stage their third night of pro-democracy rallies began massing on October 1 at the city's Golden Bauhinia Square as China's National Day holiday lent their campaign for free elections fresh momentum.

Philippe Lopez/AFP

Pro-democracy demonstrators display placards as they gather near a ceremony marking China’s 65th National Day in Hong Kong on Wednesday

Protesters stand in the street as lightning flashes in the night sky in Ferguson, Mo. on Wednesday, Aug. 20, 2014. A grand jury has begun hearing evidence as it weighs possible charges against the Ferguson police officer who fatally shot 18-year-old Michael Brown. (AP Photo/Jeff Roberson)

Jeff Roberson/AP

Lightning flashes over protesters on the streets of Ferguson, Missouri. A grand jury has begun hearing evidence as it weighs possible charges against the Ferguson police officer who fatally shot 18-year-old Michael Brown. 

Police officers point their weapons at demonstrators protesting against the shooting death of Michael Brown in Ferguson, Missouri...Police officers point their weapons at demonstrators protesting against the shooting death of Michael Brown in Ferguson, Missouri August 18, 2014. Police fired tear gas and stun grenades at protesters on Monday after days of unrest sparked by the fatal shooting of unarmed black teenager Michael Brown by a white policeman. REUTERS/Joshua Lott (UNITED STATES - Tags: CRIME LAW CIVIL UNREST)

Joshua Lott/Reuters

Police officers aim their weapons at demonstrators, having fired tear gas and stun grenades at protesters in Ferguson, Missouri. 

Public sector strike...Public sector workers and members of Unison gather outside the Houses of Parliament in central London as they take part in the one-day walkout as part of bitter disputes over pay, pensions, jobs and spending cuts. PRESS ASSOCIATION Photo. Picture date: Thursday July 10, 2014. Schools across England and Wales were facing closures and disruption today as teachers joined other public sector workers for a national strike. In total, more than a million people were taking part in the one-day walkout. The action has been hailed as the biggest strike over pay to hit the Government since it came to power in 2010. See PA story INDUSTRY Strike. Photo credit should read: Nick Ansell/PA Wire

Nick Ansell/PA

Public sector workers and members of the Unison union gather outside the Houses of Parliament in central London as they take part in the one-day walkout as part of disputes over pay, pensions, jobs and spending cuts. 

A protester wearing a gas mask holds a smartphone and gestures

Bertrand Guaythomas Samson/AFP/Getty Images

A protester wearing a gas mask holds a smartphone and gestures during a demonstration by striking employees of the French state rail company SNCF near the transport ministry in Paris

Protesters scuffle with police outside the closed entrance of Ana Rosa subway station during the fifth day of metro worker's protest in Sao Paulo June 9, 2014. A court set a 500,000 reais penalty ($223,000) for each day they stay off work from Monday and also declared the strike illegal, complicating preparations for the World Cup opening match.

Damir Sagolj/Reuters

Protesters scuffle with police outside the closed entrance of Ana Rosa station during the fifth day of metro workers’ strike in São Paulo on Monday morning.

A Filipino student shouts anti-US slogans outside the US embassy in Manila, Philippines, 21 March 2014 in a rally condemning the docking of the USS Blue Ridge and the upcoming visit of US President Barack Obama to the country. Activists also called for an end to the presence of US troops in the country and the Visiting Forces Agreement (VFA). Obama is to visit Japan, South Korea, Malaysia and the Philippines in late April. The trip is part of his efforts to broaden US engagement in the Asia-Pacific region on all fronts, from strategic security issues to trade and diplomacy. Obama had originally planned an Asia trip for late 2013, but was forced to cancel during the budget and debt limit crisis that closed the US government for more than two weeks in October.

Dennis M. Sabangan/EPA

A Filipino student protests outside the US embassy in Manila, Philippines, in a rally condemning the docking of the USS Blue Ridge and the upcoming visit of US President Barack Obama. Activists also called for an end to the presence of US troops in the country and the Visiting Forces Agreement.

TOPSHOTS An armed policeman observes the demonstration by anti-government protestors near the Government House building in Bangkok on February 14, 2014. Thousands of riot police were deployed in the Thai capital on February 14 to clear areas occupied for weeks by opposition protesters seeking to force Prime Minister Yingluck Shinawatra from office. AFP PHOTO / Manjunath KIRANManjunath Kiran/AFP/Getty Images

Manjunath Kiran/AFP/Getty Images

An armed policeman watches the demonstration by anti-government protesters near the Government House building in Bangkok

A combination of 16 photos shows portrai...A combination of 16 photos shows portraits of anti-government protesters standing at a road block in Kiev on January 31, 2014. President Viktor Yanukovych on January 30 accused the opposition of inflaming tensions in Ukraine's crisis but also admitted for the first time that the authorities had made mistakes. The opposition has refused to end street protests despite the passing of the amnesty for protesters arrested in the two-month crisis. AFP PHOTO / ARIS MESSINIS / ANGELOS TZORTZINISARIS MESSINIS,ANGELOS TZORTZINIS/AFP/Getty Images

Angelos Tzortzinisaris/AFP

Portraits of 12 anti-government protesters standing at a road block in Kiev on Friday.

An anti-government protester looks on during a rally in Bangkok January 27, 2014. A Thai anti-government protest leader was shot and killed in Bangkok on Sunday when violence erupted as demonstrators blocked early voting in many areas of the capital ahead of a disputed election next week.

Athit Perawongmetha/Reuters

An anti-government protester during a rally in Bangkok, Thailand on Monday. A protest leader was shot and killed in Bangkok on Sunday when violence erupted as demonstrators blocked early voting in many areas of the capital ahead of a disputed election next week.