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May Day is celebrated across the world to mark the May 4, 1886 Haymarket affair in Chicago where the police open fired on the crowd assembled for a general strike in retaliation to a bomb thrown by an unknown person. Here are a few pictures from people across the world participating in global celebrations of International Labour Day. (Associated Press)
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Demonstrators wearing masks depicting Marine Le Pen (L), French National Front (FN) candidate for 2017 presidential election and Emmanuel Macron (R), head of the political movement En Marche !, or Onwards !, and candidate for the 2017 presidential election with his wife Brigitte (C) walk as part of traditional May Day labour day march in Marseille, France. (Reuters)
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A man in fancy dress representing new growth with the coming new season at Chalice Well, Glastonbury, England, where Beltane festivities are taking place on May Day, Monday May, 1, 2017. The ancient Celtic festival of Beltane symbolically heralds the first signs of Spring. (Associated Press)
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A man chants slogans as people march with flags during a May Day rally in Istanbul, Turkey. (Reuters)
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A demonstrator light smoke grenades during a demonstration of leftists ahead the vigil of May Day demonstrations in Berlin, Germany. (Reuters)
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Supporters of the Russian Communist party take part in a May Day rally in central Moscow, Russia. (Reuters)
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A police officer walks beside a group of Indonesian workers marching to mark May Day in Jakarta, Indonesia. (Reuters)
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Protesters gather on Helvetiaplatz square ahead of a May Day demonstration in Zurich, Switzerland. (Reuters)
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Protesters clash with riot police as they attempt to force their way closer to a Labor Day march, in Turin, Italy. (Associated Press)
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Members of All India Trade Union Congress (AITUC) march in a rally to mark May Day in Hyderabad, India. (Reuters)
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Protesters march towards the Presidential Palace to mark the global celebration of May Day in Manila, Philippines Monday, May 1, 2017. As in the past years, workers mark the day with calls for higher wages and an end to the so-called "Endo" or contractualization. (Associated Press)
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Supporters of the leftist Palestinian group, the Popular Front For the Liberation of Palestine carry a Palestinian flag and their groups banner during a demonstration to mark International Labor Day or May Day, in Beirut, Lebanon, Monday, May 1, 2017. Workers and activists marked May Day around the world Monday with defiant rallies and marches for better pay and working conditions. (Associated press)

Who is Alexandr Wang? The 28-year-old hired by Mark Zuckerberg for $14 billion to head Meta’s Superintelligence Labs