Roman Catholic nuns of the Missionaries of Charity order pray at the tomb of Mother Teresa at a service to commemorate the 20th death anniversary of Mother Teresa at the Missionaries of Charity house in Kolkata on September 5, 2017.
Pope Francis on September 4, 2016 proclaimed Mother Teresa a saint, hailing her work with the destitute of Kolkata as a beacon for mankind and testimony of God's compassion for the poor. The revered nun's elevation to Roman Catholicism's celestial pantheon came in a canonisation mass in St Peter's square presided over by Pope Francis. / AFP PHOTO / Dibyangshu SARKAR        (Photo credit should read DIBYANGSHU SARKAR/AFP/Getty Images)