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NEW YORK, NY - SEPTEMBER 25: Pope Francis delivers an address to the General Assembly of the United Nations on September 25, 2015 in New York City. Pope Francis, who arrived in New York on Thursday evening, began his day with an appearance at the UN before heading to a multi-religious service at the 9/11 Memorial and Museum. (Photo by Bryan Thomas/Getty Images)

NEW YORK, NY - SEPTEMBER 25: Pope Francis delivers an address to the General Assembly of the United Nations on September 25, 2015 in New York City. Pope Francis, who arrived in New York on Thursday evening, began his day with an appearance at the UN before heading to a multi-religious service at the 9/11 Memorial and Museum. (Photo by Bryan Thomas/Getty Images)