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Students take part in a rally at Chinese University of Hong Kong on September 22, 2014 in Hong Kong. Thousands of students from more than 20 tertiary institutions start a week-long boycott of classes in protest against Beijing's conservative framework for political reform in Hong Kong.

Anthony Kwan/Getty Images

A rally at the Chinese University of Hong Kong saw thousands of students from more than 20 tertiary institutions start a week-long boycott of classes in protest against Beijing’s conservative framework for political reform in the region

Tibetan exiles are detained by police during a protest outside the venue of a meeting between Chinese President Xi and Indian PM Modi in New Delhi...Tibetan exiles are detained by police during a protest outside the venue of a meeting between Chinese President Xi Jinping and Indian Prime Minister Narendra Modi in New Delhi September 18, 2014. Groups of Tibetan activists held noisy protests outside the hotel where Xi was staying in New Delhi, and at the stately Hyderabad House where he sat down for formal talks with Modi.

Adnan Abidi/Reuters

Tibetan exiles are detained by police in New Delhi during a protest outside the venue of a meeting between China’s President Xi Jinping and Narendra Modi, prime minister of India

Residents of the building occupied by FLM (Front Fight for Housing) are held by police during confrontations after a building repossession September 16, 2014 in the city center of Sao Paulo, Brazil. About 70 people were detained by police.

Victor Moriyama/Getty Images

Residents of the building occupied by FLM (Front Fight for Housing) are held by police during confrontations after a building repossession on Tuesday in the city centre of Sao Paulo, Brazil

Anti-government protesters take shelter under plastic sheet during heavy rain in morning, in front of President's house in the Red Zone during the Revolution March in Islamabad...Anti-government protesters take shelter under a plastic sheet during heavy rain in the morning, in front of the President's house in the Red Zone during the Revolution March in Islamabad September 4, 2014. Pakistan's protest leaders demanding Prime Minister Nawaz Sharif's resignation prepared to resume talks with the government on Wednesday, reviving hopes for a negotiated solution to a crisis that has shaken the coup-prone nation.

Zohra Bensemra/Reuters

Anti-government protesters take shelter under a plastic sheet during heavy morning rain in front of the president’s house in the army guarded ‘red zone’, Islamabad

Supporters of Tahir ul-Qadri, a Sufi cleric and leader of Pakistan Awami Tehreek (PAT) party, help a fellow supporter who is injured, during the Revolution March in Islamabad September 1, 2014. Pakistani soldiers and paramilitary forces entered the headquarters of the state television channel PTV in Islamabad on Monday after a crowd of protesters stormed the building and took the channel off the air. Protesters led by opposition leaders Imran Khan, a hero cricket player turned politician, and ul-Qadri, a firebrand cleric, have been on the streets for weeks trying to bring down the government of Prime Minister Nawaz Sharif.

Zohra Bensemra/Reuters

Supporters of Tahir ul-Qadri, a Sufi cleric and leader of Pakistan Awami Tehreek party, help a fellow supporter who is injured, during the Revolution March in Islamabad on Monday

Members of minority Sikh community shout slogans during a protest against the killing of a Sikh trader in Peshawar, Pakistan, 06 August 2014. Unidentified armed men opened fire at three shops located in a market in Hastnagri killing a Sikh trader and injuring two others. Peshawar hosts the largets Sikh population in a Muslim dominated country.

Arshad Arbab/EPA

Members of minority Sikh community shout slogans during a protest against the killing of a Sikh trader in Peshawar, Pakistan on Wednesday

Rain clouds hang over Central in Hong Kong, Thursday, July 24, 2014. As activists vow to shut down Hong Kongís financial district in protest at Chinaís attempt to hobble democratic elections in the city, businessman Bernard Chan is preparing for the worst. Chanís investment company has added backup phone lines, bought extra laptops and stockpiled instant noodles in case its headquarters downtown is caught in the middle of the protest. (AP Photo/Kin Cheung)

Kin Cheung/AP

Rain clouds hang over central Hong Kong as activists vow to shut down its financial district in protest at China’s attempt to hobble democratic elections in the city. Businessman Bernard Chan is preparing for the worst. Chan’s investment company has added backup phone lines, bought in extra laptops and stockpiled instant noodles in case its headquarters downtown is caught in the middle of the protest. Read more

People hold placards and shout slogans while marching through Cape Town to protest Israel's military campaign in Gaza and show their support to the Palestinian people, on July 16, 2014. Israel urged 100,000 Gazans to flee their homes on July 16, but the warning was largely ignored despite an intensification of the military's nine-day campaign after Hamas snubbed a ceasefire effort.

Rodger Bosch/AFP

People hold placards and shout slogans while marching through Cape Town to protest Israel’s military campaign in Gaza and show their support to the Palestinian people, on Wednesday

Public sector workers march in central London this afternoon during a 24 hour strike.

Charlie Bibby/FT

Public sector workers march in central London during a 24-hour strike Read more

A boy bangs a spoon on a plate as part of a protest rally demanding restoration of the state programme "affordable housing", in front soldiers of volunteer battalion "Donbass" guarding the Ukrainian parliament building during a session in Kiev on July 3, 2014,  to prevent "planned terrorist acts", according to battalion commander Semion Semionchenko. Former policeman who headed Ukraine's VIP bodyguard service, Valeriy Geletey, was nominated by Ukrainain President Petro Poroshenko and confirmed by parliament as the country's new Defence minister on July 3, making him the pointman in the battle against pro-Kremlin seperatists in the east.

Sergei Supinnsky/AFP

Protesters demand restoration of the state programme of affordable housing, in front of volunteer soldiers of battalion Donbass, as they guard the Ukrainian parliament building in Kiev on Thursday to prevent “planned terrorist acts”, according to battalion commander Semion Semionchenko