Worshipers cheer at the "Artemio Franchi" municipal stadium as Pope Francis (unseen) arrives to lead a mass on November 10, 2015 in Florence as part of a pastoral visit in Prato and Florence. Earlier today Pope Francis urged Italy's textile city of Prato, home to a large Chinese community with widespread illegal sweatshops, to fight exploitation, illegality and corruption. Thousands of people lined the streets of the Tuscan city to hear the Argentine pontiff, who arrived by helicopter for a lightning visit, addressing the crowds from the cathedral's famous balcony, designed by Renaissance sculptor Donatello.The town became a symbol for both uncontrolled immigration and unchecked labour exploitation in December 2013, when seven Chinese workers burned to death in a fire in an unregulated workshop where they slept after 16-hour shifts.     AFP PHOTO / GIUSEPPE CACACE        (Photo credit should read GIUSEPPE CACACE/AFP via Getty Images)