People protest during a May Day rally in the center of Barcelona, Spain, Friday, May 1, 2015. May 1 is celebrated as the International Labor Day or May Day across the world. (AP Photo/Manu Fernandez)
People protest during a May Day rally in the center of Barcelona, Spain, Friday, May 1, 2015. May 1 is celebrated as the International Labor Day or May Day across the world. (AP Photo/Manu Fernandez)
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