He spoke to the former sex slaves. “Today’s visit by Pope Francis is another call to conscience to fight the trafficking of human beings, which the Holy Father has on several occasions defined as ‘a crime against humanity,” a statement said. The 79-year-old cleric has repeatedly described human trafficking as a “crime against humanity”. Pope Francis encouraged the former sex workers “to be strong” as they started their new lives. This year, on one Friday per month, the pope make special visits to honor the Jubilee of Mercy. Previous destinations for Francis’ Fridays of Mercy includes the Nazi concentration camps of Auschwitz-Birkenau, a migrant centre on the Greek island of Lesbos, and facilities around Rome for the elderly, mentally ill and recovering drug addicts.