Worldwide marches mark Labor Day (PHOTOS, VIDEOS)

Thousands have rallied worldwide to celebrate International Workers' Day or May Day, the largest labor holiday in the world. In some countries demonstrations have turned violent with police deploying tears gas.

Several hundred people took to the streets in Istanbul with police using tear gas and rubber bullets to disperse protesters at the landmark Taksim Square, the Hurriyet Daily reported. Some 10,000 officers were on patrol in the area.

At least five people were detained in the Okmeydanı neighborhood of Istanbul after being found in possession of gas masks and marbles. Also two women were arrested at Taksim Square when they attempted to unfurl a banner.

Policemen block a street to prevent people from gathering for May Day demonstrations near Taksim Square in Istanbul, Turkey, May 1, 2015 (Reuters / Umit Bektas)

Some people were shouting "Long Live May 1!" and "shoulder to shoulder against Fascism!"

Turkish Prime Minister Ahmet Davutoglu earlier said only “symbolic” rallies are allowed and any attempt to stage mass demos will be blocked.

Protesters from the Communist-affiliated trade union PAME hold red flags during a May Day rally in front of the parliament building in Athens May 1, 2015 (Reuters / Alkis Konstantinidis)

In Ukraine, about a thousand supporters of the Communist Party gathered in Kiev despite the authorities banning May Day demonstrations with Communist flags in the center of the city, RIA Novosti reported.

People have been protesting against the rise in prices and government policies, and say they want peace in the country.

During the rally the leader of the Communist Party, Petr Simonenko, accused the Kiev authorities of “anti-popular policies,” price hikes and chronic unemployment in Ukrainian.

“Ukrainian issues are not decided in Kiev now. It is either Brussels, or Washington, or other European capitals,” he said, adding he wants all Ukrainian problems solved in Kiev again.

Police said they have arrested 19 radicals in balaclavas, who attempted to break into the rally and started scuffling with law enforcers.

About 100,000 people have gathered in the Russian capital to take park in May Day demonstrations. People are carrying balloons, flowers and placards calling for “Decent work! Decent wages!”

Massive May Day rallies have also descended on the streets of London. The march, organized mainly by trade unions and other London-based workers’ communities, started at Clerkenwell Green and continued to Trafalgar Square.

One million Cubans are demonstrating on Havana´s Revolution Square, local press reported. The Cuban Worker´s Confederation said the rally will reaffirm the people´s determination to keep fighting for socialism.

Thousands of workers have staged demonstrations in Athens, Greece. The rally was held amid a train and tram drivers’ strike, which was disrupting the capital’s metro and national rail services.

Labor Day rallies in the US are focusing on police brutality in the wake of a series of black men’s’ deaths after encounters with officers of the law.

"It is important to support movements and struggles that stand up for people being singled out by the system. Right now, immigrants share that distinction with African-American youth - that we are being targeted by the system," said Miguel Paredes, membership coordinator of the Coalition for Humane Immigrant Rights of Los Angeles.

Members of the Group of the National Confederation of Trade Unions, commonly known in Japanese as Zenroren, raise their fists as they shout slogans during their annual May Day rally in Tokyo May 1, 2015 (Reuters / Issei Kato)

However, some marches will stick with tradition and concentrate on labor and immigration issues.

One of the biggest demos is expected in Oakland where the International Longshore and Warehouse Union Local 10 announced its members will stop work as early as 5:30 am

Workers carry banners with messages in support of workers' rights during a march to mark Labour Day in Yangon May 1, 2015 (Reuters / Soe Zeya Tun)

May Day marches have also swept Asia, the Middle East and Europe.

About 20,000 people have taken to the streets of Milan in a May Day demonstration dubbed “No Expo May Day Parade”. The parade coincided with the opening of the Expo 2015 Universal Exposition.

Opponents of Expo 2015 have accused the authorities of wasting public funds by hosting the show as the country plunges deeper into crisis.



Garment workers shout and wave Cambodian national flags as they take part in a protest calling on the government to raise wages during a march to mark Labour Day in Phnom Penh May 1, 2015 (Reuters / Samrang Pring)

People gather in mass Friday prayer during a May Day rally in Jakarta, Indonesia, May 1, 2015 (Reuters / Beawiharta)

People throw smoke grenades during the annual Labour Day protest in front of Presidential Office in Taipei, Taiwan, May 1, 2015 (Reuters / Patrick Lin)