Filipino activists and workers burn an effigy of Philippine President Benigno Aquino III and US Uncle Sam during a protest rally marking International Labor Day outside the gate of Malacanang presidential palace in Manila, Philippines, on May 1. Thousands of Filipino workers hold Labor Day protests in Manila calling on Philippines President Benigno Aquino III for an immediate wage hike due to increasing cost of living.

Protestors clash with Turkish riot police during the May Day rally in Istanbul, Turkey. Turkish police and protesters clashed in central Istanbul on May 1 after authorities moved to prohibit traditional Labour Day rallies at Taksim Square. Police used water cannons and tear gas against the demonstrators near Taksim Square. Witnesses reported clashes in several neighbourhoods in the area.

Masked policemen take cover behind shields during clashes at a May Day demonstration on May 1, in Istanbul.

Protestors chant slogans as they stand at the windows of the DISK ( Confederation of Revolutionary Trade Unions of Turkey) building on May 1, in Istanbul. Several people were injured on Wednesday as Turkish riot police used water canon and tear gas to disperse hundreds of protesters who defied a May Day ban on demonstrations in a central part of Istanbul.

Danish Prime Minister Helle Thorning-Schmidt, is met with strong protests during her May Day speech on May 1 at Tangkroen in Aarhus, Denmark.

Demonstrators raise their fists during a demonstration on May 1. A strike stopped ferry services to the Greek islands and disrupted public transport in the capital Athens ahead of May Day protests Wednesday against Greece's prolonged economic austerity policies.

South Korean riot policemen spray tear gas at protesters during a rally marking 123th World Labor Day in Seoul, South Korea on May 1. The protesters attended the demonstration demanding an improvement of working conditions for temporary workers.

An elderly Russian Stalinist stands in front of a column of demonstrators with a portrait of Stalin during a traditional May Day communist demonstration, in Moscow, Russia. People from around the world are marking May 1 (May Day) as International Labour Day.

An elderly woman waves as she finds herself caught ahead of an Occupy Wall Street May Day march down Fifth Ave. in New York on May 1.

An Anti-capitalist protester from the 'Occupy' movement lays in front of a police officer in Paternoster Square in London on May 1.

Occupy Wall Street protesters celebrate in Union Square park as they demonstrate in New York City on May 1.

Occupy Wall Street partcipants gather to stage a May Day march at Bryant Park in New York on May 1.

Some protesters chose to demonstrate more quietly during May Day celebrations in New York.

Protesters affiliated with Occupy Wall Street march down Broadway in Manhattan towards Wall Street as a man dressed as Captain America stands in a window on May 1.

A protester holds a rose with a bubble on it in front of police at a rally for International Worker's Day on May 1 in Oakland, Calif.

Police tape off a Wells Fargo Bank in Seattle Tuesday, May 1, after protesters broke the bank's windows during a May Day march.

Shattered window glass from a Wells Fargo Bank in Seattle Tuesday, May 1, 2012, after protesters broke the bank's windows during a May Day march after some in the crowd turned violent.

Hundreds of people gather in Seattle's Westlake Park to celebrate and protest on Tuesday, May 1.

Indonesian workers shout slogans during a rally to mark May Day in Jakarta on May 1, 2012. Thousands of Indonesian workers staged the rally demanding the government raise the minimum wage and reject outsourcing.

A man carries a poster reading "Putin is our President!" during the May Labor Day rally of the Russian Trade Unions and United Russia party in Moscow on May 1, 2012. Russia's president-elect Vladimir Putin and outgoing head of state Dmitry Medvedev on Tuesday joined over 100,000 people in a Soviet-style mass march through Moscow.

Protesters dance around the burnt effigy of Philippine President Benigno Aquino III during a May Day rally near the Presidential Palace in Manila on May 1, 2012. Thousands of workers marched under a brutal sun in Manila to demand a wage increase amid an onslaught of oil price increases, but the Philippine President rejected a $3 daily pay hike which the workers have been demanding since 1999 and warned may worsen inflation, spark layoffs and turn away foreign investors.

Bahraini Shiites attend a demonstration celebrating Labor Day in the village of Muqsha'a on April 30, 2012. Many Shiite employees were either dismissed or indefinitely suspended from their jobs in the wake of a brutal crackdown by the Bahrain government.

Indian sex workers hold candles and posters as they march in a May Day rally asking for their rights and the recognition of their profession in Kolkata, late on April 30, 2012.

Visitors takes picture in front of Tiananmen gate in Beijing, China, on May 1, 2012. Tens of thousands of visitors flock to the area around Tiananmen Square to enjoy a public holiday to mark May Day.

Russian President Dmitry Medvedev (2nd L), Prime Minister Vladimir Putin (2nd R), Independent Trade Unions' Chairman Mikhail Shmakov (L) and State Duma deputy Viktor Pinsky (R) toast in a bar after attending a rally in Moscow on May 1, 2012.

Garment workers attend a rally to mark May Day at Paltan in Dhaka, Bangladesh, on May 1, 2012. Different workers organizations have arranged programmes inluding a rally, seminars and cultural events as they demand the establishment of workers' rights.

Laborers drilling a mountain to extract rocks inside a stone quarry on May 1, 2012 in Srinagar, Kashmir. Local labor leaders told media their colleagues at many construction sites were denied a May Day public holiday by their employers.

Elephants, one of them carrying a portrait of Thai King Bhumibol Adulyadej, take part in a march with labors to mark International May Day at Royal Plaza in Bangkok, Thailand on May 1, 2012.

Elephants perform during a demonstration with Thai workers to mark International May Day at Royal Plaza in Bangkok, Thailand, 01 May 2012.

A woman greets Russian communist supporters from a window with a red cloth during the traditional May Day rally in central Moscow on May 1. May Day traditionally celebrates the rights of the proletariat in the former Soviet Union. Crowds waving balloons and blue or red flags gathered in cities from the Pacific port of Vladivostok to Moscow in carefully-choreographed rallies reminiscent of the Soviet era when May 1 was one of the most venerable holidays celebrating international socialism.

Riot policemen stand beside fire flares as they clash with left-wing protestors during May Day demonstrations in the Kreuzberg district of Berlin, May 1.

Cuban soldiers bearing their national flag march in the May Day parade at Revolution Square in Havana, Cuba, May 1. The demonstration is being touted as a massive show of support for economic changes recently approved by the Communist Party - even though the people holding placards and shouting slogans haven't seen the details yet.

A man walks next a tied up ship at the port of Piraeus, near Athens, on Sunday, May 1, during a 24-hour port strike. Rail services in Greece, including the Athens suburban railway were suspended for 24 hours. Protesters gathered in central Athens and other Greek cities for May Day rallies to protest against the austere measures needed to secure rescue loans for near-bankrupt Greece.