Pope Leads Palm Sunday Mass at St. Peter's Square

VATICAN CITY, VATICAN - APRIL 13: Catholics attend the Palm Sunday Mass at St. Peter's Square on April 13, 2014 in Vatican City, Vatican. Palm Sunday, which is the 6th Sunday of Lent, marks the official beginning of Holy Week during which Christians recall the passion and death of Christ. On Palm Sunday Christians celebrate Jesus' arrival into Jerusalem, where he was put to death. It is the 6th Sunday of lent and marks the official beginning of Holy Week during which Christians observe the death of Christ before celebrations begin on Easter Sunday. (Photo by Franco Origlia/Getty Images)