People help a child affected by teargas as police use water cannons and teargas to disperse thousands of people trying to reach the city's main Taksim Square to celebrate May Day in Istanbul, on May 1, 2014. Clashes erupted between demonstrators and police as crowds determined to defy a government ban tried to march to the city's iconic square. (Photo by Emrah Gurel/Associated Press)

Reagan Strom (L) 15, and her friend Natasja Ugarte, 16, view a pickup truck that became buried in sand and mud after the road was washed away in their Cordova Park neighborhood in Pensacola, Florida, May 1, 2014. The remnants of the storm that dumped up to 11 inches (28 cm) of rain in the Florida Panhandle on Wednesday had moved into the Atlantic Ocean by early Thursday, said Dan Petersen, a National Weather Service meteorologist. (Photo by Michael Spooneybarger/Reuters)

A worshipper attends the Day of the Spiritual Indoctrinator annual celebrations at the Vale do Amanhecer (Valley of the Dawn) community in the Planaltina neighborhood of Brasilia, May 1, 2014. The Vale do Amanhecer (Valley of Dawn) is a Christian Spiritualistic doctrine founded by the spiritualist visionary known as Tia Neiva (Aunt Neiva) in 1958 in Brazil's Federal District. Today, the community has approximately 30,000 people who live in the surroundings of the temple, with more than 400 temples in Brazil as well as in Japan, Bolivia, United States and Europe, and more than 300,000 mediums worldwide, according to the organizers. (Photo by Ueslei Marcelino/Reuters)

Traditionally dressed dancers perform during the May Day celebrations in Lofer in the Austrian province of Salzburg, on Thursday, May 1, 2014. (Photo by Kerstin Joensson/AP Photo)

A French EUFOR (European Union Force) sniper takes a strategic position in Bangui airport May 1, 2014. European Union peacekeepers took charge of security at Central African Republic's main airport on Wednesday in their first major operation to try and end months of sectarian slaughter. (Photo by Emmanuel Braun/Reuters)

A mourner cries next to yellow ribbons dedicated to missing and dead passengers of sunken passenger ship Sewol, after paying tribute at the official memorial altar in Ansan May 2, 2014. A culture of cosy personal ties that can blur the lines between businesses and those regulating them, of profit over safety, and soft courts is in focus as South Korea demands answers over the sinking of the ferry with the loss of more than 300 lives, mainly high school students. (Photo by Kim Hong-Ji/Reuters)

A pro-Russian activist gets medical attention after a clash with pro-government activists during a rally and march in Donetsk, Ukraine, on March 28, 2014. Several people were injured when the pro-Russian activists attacked a pro-government march. (Photo by Scott Olson/Getty Images)

A intelligence officer (C) who infiltrated the protest of Bolivia's low ranking army officers protects himself from demonstrators at the San Francisco square in La Paz, April 29, 2014. Hundreds of low ranking officers of Bolivia's Armed Forces continue to protest after Bolivia's military leaders dismissed hundreds of soldiers for “sedition”, according to local media. Picture taken with fisheye lens. (Photo by David Mercado/Reuters)

A woman walks past three cars that were set on fire by protestors demonstrating against the death of an elderly woman who died yesterday during a police operation against suspected drug traffickers in the Complexo do Alemao of Rio de Janeiro, Brazil, Monday, April 28, 2014. The woman who died is Arlinda Bezerra das Chagas, age 72. (Photo by Silvia Izquierdo/AP Photo)

Campaigners against the construction of the proposed HS2 (High Speed 2) railway line, including two dressed up as otters, pose for photographs for the media with banners and an inflatable white elephant as they protest outside the Houses of Parliament in London, Monday, April 28, 2014. The protest was held Monday to coincide with a debate in Parliament on HS2. A white elephant is a term given to a scheme or object considered by some people to offer little value. (Photo by Matt Dunham/AP Photo)

Visitors take in the opening day of the Glacier Skywalk near Alerta's Columbia Icefields in Jasper National Park Thursday May 1, 2014. (Photo by Gavin Young/Calgary Herald)

A pilot in US B-25 Mitchell bomber from1945 flies beside the “Freedom” statue at the Gellert Hill on May 1, 2014 during a Red Bull flying and car show around the Danube River of Budapest downtown. (Photo by Attila Kisbenedek/AFP Photo)

Giant Playmobil characters come to life to celebrate the launch of Playmobil's 40th anniversary, at the Pirate Castle, Camden Lock, London, on April 30, 2014. (Photo by Doug Peters/PA Wire)

A Filipino mother carries her children while their house is on fire in a residential slum area in Manila, Philippines, 29 April 2014. The Manila Fire Department said fire left more than thirty families homeless and three residents were hurt. (Photo by Dennis M. Sabangan/EPA)

Russian artist Dimitri Vrubel cleans his painting depicting Soviet leader Leonid Brezhnev kissing his East German counterpart Erich Honecker at the East Side Gallery in Berlin, Germany, 27 April 2014. Several artists along with Berlin residents and tourists cleaned paintings of the 1.3 km long section of the Berlin Wall. (Photo by Kay Nietfeld/EPA)

People walk with flags and balloons on Red Square during a rally in Moscow, Russia, 01 May 2014. Labour Day, also known as International Workers' Day or May Day, is observed worldwide on 01 May. (Photo by Yuri Kochetkov/EPA)

People in helmets (left and right), dressed as Russian factories workers, hold a man wearing Barack Obama's mask with mock NATO's bomb in chains, as they take part in a Communists demonstration in downtown Moscow, Russia, Thursday, May, 1, 2014. Thousands of Communists, members of Russia's main political parties and opposition activists staged competing marches in Moscow and other cities Thursday marking the traditional May Day holiday. Poster at the background reads: “Peace, Labour, May”. (Photo by Denis Tyrin/AP Photo)

A Taiwanese boy wears a slogan reading “Stop the 4th Nuclear Power Plant. Give Power Back to People”, during a protest against the construction of Taiwan's fourth nuclear power plant to be completed in Taipei, Taiwan, Sunday, April 27, 2014. Taiwan's opposition party has long opposed nuclear power and public caution over nuclear safety has risen following the 2011 nuclear disaster in Japan. (Photo by Chiang Ying-ying/AP Photo)

A boy dressed as a Pope, yawns as he prepares to join a parade in celebration of the canonization or the elevation to sainthood in the Vatican of Roman Catholic Pope John Paul II and Pope John XXIII Sunday, April 27, 2014, at suburban Quezon city, northeast of Manila, Philippines. Pope Francis declared his two predecessors John XXIII and John Paul II saints on Sunday before hundreds of thousands of people in St. Peter's Square, an unprecedented ceremony made even more historic by the presence of retired Pope Benedict XVI. The predominantly Roman Catholic Philippines joins several nations worldwide in the celebration of canonization of the two Popes. (Photo by Bullit Marquez/AP Photo)

An injured Pro-Russian activist speaks with an armed protester during clashes with police in front of the regional administration building in Donetsk, Ukraine, Thursday, May 1, 2014. Anti-government demonstrators in Donetsk have stormed the local prosecutor's office. The clash came after a march by several hundred people carrying flags of the Donetsk People's Republic, a movement that seeks either greater autonomy from the central government, or independence and possible annexation by Russia. (Photo by Evgeniy Maloletka/AP Photo)

Revelers perform the “wining” dance on a street during the Jamaica Carnival Roadmarch in Kingston, on April 27, 2014. (Photo by Gilbert Bellamy/Reuters)

Pro-Russian activists clash with police in front of the regional administration building in Donetsk, Ukraine, Thursday, May 1, 2014. Anti-government demonstrators in Donetsk have stormed the local prosecutor's office. The clash came after a march by several hundred people carrying flags of the Donetsk People's Republic, a movement that seeks either greater autonomy from the central government, or independence and possible annexation by Russia. (Photo by Evgeniy Maloletka/AP Photo)

Participants wrestle in barbecue sauce at Talladega Superspeedway in Talladega, Alabama on May 2, 2014, where the Sprint Cup Aaron's 499 auto race starts Sunday. (Photo by Rainier Ehrhardt/Associated Press)

Residents help firemen in putting out fire that engulfs a poor neighborhood in Manila, Philippines, on March 29, 2014. Authorities said three people died in the hour-long fire that razed more than a dozen homes and displaced several families. (Photo by Bullit Marquez/Associated Press)

A men costumed as devil kisses a skull in a small train in Wernigerode, Germany, Wednesday, April 30, 2014. Hundreds of costumed devils and witches meet to celebrate Walpurgis Night, a traditional religious holiday of pre-Christian origins. The event is named after St. Walburga, an English nun who helped convert the Germans to Christianity in the 8th century. (Photo by Jens Meyer/AP Photo)

Soldiers of the French Foreign Legion stand guard during the rehearsal of the ceremony commemorating the battle of Camaron in the ancient theatre of Orange, France, April 29, 2014. The ceremony will mark the regiment's last public appearance in Orange before its move to its new base in Carpiagne. (Photo by Boris Horvat/AFP Photo)

A Kashmiri woman wails in front of her gutted house in Srinagar, summer capital of Indian Kashmir, 29 April 2014. At least 27 shanties, two residential houses and shops were gutted in the fire. No casualties have been reported so far, according to officials. (Photo by Farooq Khan/EPA)

A masked dancer somersaults as he performs during a May Day rally in Jakarta, Indonesia, Thursday, May 1, 2014. (Photo by Dita Alangkara/AP Photo)

Indonesian labour activists representing underpaid and downtrodden workers perform during a Labour Day protest on May 1, 2014 in Jakarta, Indonesia. Protesters across Indonesia have organised rallies to demand higher wages, as Indonesia recognises its first national labour day holiday. (Photo by Ed Wray/Getty Images)

Turkish protestors clash with riot police as police use water cannon and tear gas to disperse protestors during a rally for May day in Istanbul, Turkey, May 1, 2014. Police in Istanbul were on May 1 using water cannon and firing tear gas at protesters attempting to reach the city's Taksim Square, local media reported, where the May Day rallies have been banned. (Photo by Sedat Suna/EPA)

A masked dancer performs during a May Day rally at the business district in Jakarta, on May 1, 2014. (Photo by Reuters/Beawiharta)

Riot police clash with demonstrators during a march in Turin, northern Italy, 01 May 2014 to mark International Labour Day. (Photo by Alessandro Di Marco/EPA)

Tourists take a “selfie” as demonstrators burn a trash container during a May Day rally in Barcelona, Spain, on May 1, 2014. Tens of thousands of workers marked May Day in European cities with a mix of anger and gloom over austerity measures imposed by leaders trying to contain the eurozone's intractable debt crisis. (Photo by Manu Fernandez/Associated Press)

A youth jumps into the Mediterranean sea while others watch him at Manara's seaside in Beirut, Lebanon, 27 April 2014. Lebanese are going to the beach to cool off as summer weather begins in the region. (Photo by Wael Hamzeh/EPA)