Francis is returning to Lesbos this week for the first time since that defining day of his papacy, making a repeat visit to the island where hundreds of thousands of refugees and migrants have passed through on their journey to Europe. But he will find attitudes toward migrants here have only hardened in the intervening five years, as they have elsewhere in Europe, with tensions flaring on the border between European Union country Poland and Belarus and more deadly crossings — most recently in the English Channel.