Representatives of the Amazon Rainforest's ethnic groups, Catholic prelates, Secretary of the Congregation for Bishops, Italian cardinal Lorenzo Baldisseri (Rear C) and Pope Francis (C-R) march in procession during the opening of the Special Assembly of the Synod of Bishops for the Pan-Amazon Region on October 7, 2019 outside St. Peter's Basilica in the Vatican. - Pope Francis is gathering Catholic bishops at the Vatican to champion the isolated and poverty-struck indigenous communities of the Amazon, whose way of life is under threat. (Photo by Andreas SOLARO / AFP)