(01 of12)
Open Image ModalTurkish riot police officers take cover as Kurdish protesters shoot fireworks at them during clashes in central Istanbul on Dec. 7, 2013. (Bulent Kilic/AFP/Getty Images) (credit:Bulent Kilic/AFP/Getty Images)
(02 of12)
Open Image ModalA teacher pushes back into a police shield as he tries to break past a wall of riot police keeping teachers from blocking a main avenue, in Mexico City on September 11, 2013. (Christian Palma/AP) (credit:Christian Palma/AP)
(03 of12)
Open Image ModalA Palestinian protester throws back a tear gas canister fired by Israeli soldiers during a demonstration against the expropriation of Palestinian land by Israel in the village of Kfar Qaddum, near the occupied West Bank city of Nablus, on January 4, 2013. (Jaafar Ashtiyeh, AFP / Getty Images) (credit:(Jaafar Ashtiyeh, AFP / Getty Images)
(04 of12)
Open Image ModalIndian physiotherapy students hold placards at a rally on the 1st anniversary of the fatal gang rape of a young woman in a bus New Delhi, India, Monday, Dec. 16, 2013. The victim, a 23-year-old physiotherapy student, became a rallying cry for tens of thousands protesting the treatment of women. (AP Photo/Saurabh Das) (credit:AP)
(05 of12)
Open Image ModalU.S. swimmer Diana Nyad, 64, points towards Florida before her swim to Florida from Havana, Cuba, Saturday, Aug. 31, 2013. On her fifth try, Nyad set an open-water record by swimming from Havana to the Florida Keys without a protective shark cage. (AP Photo/Ramon Espinosa) (credit:AP)
(06 of12)
Open Image ModalNine-year-old Nabila Rehman holds a photo with a drawing she made depicting a drone strike that killed her grandmother, Tuesday, Oct. 29, 2013, during a news conference on Capitol Hill in Washington. (AP Photo/ Evan Vucci) (credit:AP)
(07 of12)
Open Image ModalIn this Monday, April 15, 2013 file photo, an emergency responder and volunteers, including Carlos Arredondo, in the cowboy hat, push Jeff Bauman in a wheelchair after he was injured in one of two explosions near the finish line of the Boston Marathon. (AP Photo/Charles Krupa, File) (credit:AP)
(08 of12)
Open Image ModalAnti-government protesters push over a barricade in front of the central police headquarters during a demonstration on Dec. 4, 2013 in Bangkok, Thailand. (Photo by Ed Wray/Getty Images) (credit:Getty Images)
(09 of12)
Open Image ModalBrazilian indigenous people from several tribes take part in a demonstration against the new law of demarcation of indigenous reserves, in Brasilia on Dec. 4, 2013. (EVARISTO SA/AFP/Getty Images) (credit:Getty Images)
(10 of12)
Open Image ModalThis image made available by environmental organization Greenpeace shows the Greenpeace ship Arctic Sunrise entering the Northern Sea Route (NSR) off Russia's coastline to protest against Arctic oil drilling, Saturday, Aug. 24, 2013. The sign reads "Save the Arctic!" (AP Photo/Will Rose, Greenpeace) (credit:AP)
(11 of12)
Open Image ModalSaudi activist Manal al-Sharif, who now lives in Dubai, flashes the sign for victory as she drives her car in the Gulf Emirate city on Oct. 22, 2013, in solidarity with Saudi women protesting a driving ban for women. Under the slogan 'driving is a choice,' activists called on social networks for women to gather in vehicles on Oct. 26, the culmination of the campaign launched in September, in the only country in the world where women do not have the right drive. (MARWAN NAAMANI/AFP/Getty Images) (credit:Getty Images)
(12 of12)
Open Image ModalDavide Martello plays the piano as a protester holds an umbrella to protect him from the rain under the monument of Mustafa Kemal Atatur at Taksim Square in Istanbul Friday, June 14, 2013. Five people, including a police officer, were reportedly killed and over 5,000 protesters and 600 police injured in clashes around the country. (AP Photo/Thanassis Stavrakis) (credit:AP)