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marching for labor
Afp/Getty Images Photos by (top row, from left) Kena Betancur, Noel Celis, and Alain Jocard, and (bottom row, from left) Pascal Diaz/Afp/Getty Images, Enrique De La Osa/Reuters, and Dina Rudick/Globe Staff

Thousands of people around the world took part in May Day marches on Sunday in support of workers rights. Demonstrators took to the streets in (clockwise, from top left) New York, Manila, Paris, Boston, Havana, and Santiago, Chile, with violent clashes occurring in some cities. A2, A4.