PHOTOS: May Day rallies angry workers worldwide
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Credit: AFP/Getty Images
People protest during a May Day rally in the centre of Barcelona on May 1, 2012. Tens of thousands took to the streets across the globe for May Day to press for workers' rights amid tough economic times and to back an array of other causes. AFP PHOTO / JOSEP LAGO (Photo credit should read JOSEP LAGO/AFP/GettyImages)
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