People carry Cuban flags during the annual May Day march near a building covered with an image of Venezuela's late President Hugo Chavez, right, and late Cuban union leader Lazaro Pena in Revolution Square in Havana, Cuba, Wednesday, May 1, 2013. Workers held protests, parades, strikes and other demonstrations in cities across the world on Wednesday. (AP Photo/Ramon Espinosa)

Associated Press
People carry Cuban flags during the annual May Day march near a building covered with an image of Venezuela's late President Hugo Chavez, right, and late Cuban union leader Lazaro Pena in Revolution Square in Havana, Cuba, Wednesday, May 1, 2013. Workers held protests, parades, strikes and other demonstrations in cities across the world on Wednesday. (AP Photo/Ramon Espinosa)
People carry Cuban flags during the annual May Day march near a building covered with an image of Venezuela's late President Hugo Chavez, right, and late Cuban union leader Lazaro Pena in Revolution Square in Havana, Cuba, Wednesday, May 1, 2013. Workers held protests, parades, strikes and other demonstrations in cities across the world on Wednesday. (AP Photo/Ramon Espinosa)
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