Pilgrims holding a giant flag reading "Pray for Venezuela" wait for the arrival of Pope Francis for his welcoming ceremony at Campo Santa Maria La Antigua in Panama City during World Youth Day on January 24, 2019. - Pope Francis will on Thursday formally open World Youth Day celebrations which have drawn around 200,000 young people from around the world to Panama where he is expected to defend Central American migrants and human rights. (Photo by Raul Arboleda / AFP)