Pope Francis delivers his speech before a penitential liturgy at the Las Garzas de Pacora detention center, in Panama, Friday, Jan. 25, 2019. Francis on Friday denounced how society puts up "invisible walls" to marginalize sinners and criminals as he brought World Youth Day to Panama's juvenile delinquents who can't participate in the Catholic Church's big festival of faith. (AP Photo/Alessandra Tarantino)