Pilgrims from all over the World dance and sing on the Blonia Meadows in Krakow, on July 26, 2016, to celebrate the Opening Mass on the first day of the World Youth Days. Pope Francis heads to Poland on July 27 for an international Catholic youth festival with a mission to encourage openness to migrants made tougher by a fresh jihadist attack in France in which two jihadists attacked a church in a Normandy town, killing an elderly Catholic priest by slitting his throat, and severely injuring another person. / AFP PHOTO / JOE KLAMAR