VATICAN CITY, VATICAN - APRIL 20:  Swiss Guards attend Easter Mass held by Pope Francis in St. Peter's Square on April 20, 2014 in Vatican City, Vatican. Pope Francis is attending the Holy Week for his second time as a Pontiff. Using the global twitter network, yesterday he asked people worldwide to join him in prayer for the victims of the tragic ferry disaster in South Korea.  (Photo by Franco Origlia/Getty Images)