Workers and activists marked May Day on Tuesday with rallies to demand their government address labour issues.
International Workers' Day is a public holiday in many countries, though activities are restricted in some places, sometimes leading to confrontations.
A look at some of the events around the world:
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RUSSIA
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More than 100,000 people came out on the streets on Moscow to march in the traditional May Day parade.
Moscow's Federation of Trade Unions said about 120,000 people marched from the Red Square on the main streets of the Russian capital to mark May Day.
In St. Petersburg, Russia's second-largest city, however, Russians unhappy with the Kremlin's attempts to curtail internet freedom joined the official May Day demonstration.
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TURKEY
Police in Istanbul detained more than a dozen demonstrators who tried to march toward Istanbul's symbolic main square in defiance of a ban.
Turkey declared Taksim Square off-limits to May Day celebrations citing security concerns. Roads leading to the square were blocked and police allowed only small groups of labour union representatives to lay wreaths at a monument there.
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GREECE
Thousands of Greeks marched through central Athens in at least three separate May Day demonstrations.
Police said at least 7000 people were at the first demonstration in Athens, which was organised by a communist party-led union. The protesters marched by parliament and headed up a major avenue to the United States Embassy.
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PHILIPPINES
About 5000 people from various groups rallied near the presidential palace in Manila to protest the failure of Philippine President Rodrigo Duterte to fulfil a major campaign promise to end contractualisation, the widespread practice of short-term employment.
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SOUTH KOREA
Thousands of labour union members rallied in downtown Seoul for a higher minimum wage and other demands.
The rally was organised by the Korean Confederation of Trade Unions. The police estimated the crowd at 10,000 people.
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INDONESIA
About 10,000 workers from various labour groups rallied near the presidential palace in Jakarta to voice their demands.
The protesters urged the government to avoid outsourcing, and to raise their wages. They also asked the government to stop foreign labourers from working in Indonesia, saying it decreases employment opportunities for local workers.
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CAMBODIA
About 2000 garment workers gathered at a park in Cambodia's capital, Phnom Penh, for a rally organised by a garment union coalition.
The workers wanted to march to the National Assembly to urge lawmakers to help them address labour-related concerns, but the group was stopped by riot police.
