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HAVANA, CUBA - SEPTEMBER 20: Pope Francis gestures as he makes a speech to youngsters following a visit to the Father Felix Varela cultural center on September 20, 2015 in Havana, Cuba. Pope Francis is on the first full day of his three day visit to Cuba where he will meet President Raul Castro and hold Mass in Revolution Square before travelling to Holguin, Santiago de Cuba and El Cobre then onwards to the United States. (Photo by Carl Court/Getty Images)

HAVANA, CUBA - SEPTEMBER 20:  Pope Francis gestures as he makes a speech to youngsters following a visit to the Father Felix Varela cultural center on September 20, 2015 in Havana, Cuba. Pope Francis is on the first full day of his three day visit to Cuba where he will meet President Raul Castro and hold Mass in Revolution Square before travelling to Holguin, Santiago de Cuba and El Cobre then onwards to the United States.  (Photo by Carl Court/Getty Images)