Clergy stand during a World Youth Day Mass at Copacabana beach, in Rio de Janeiro, Brazil, Tuesday, July 23, 2013. As many as 1 million young people from around the world are expected i

 

              Clergy stand during a World Youth Day Mass at Copacabana beach, in Rio de Janeiro, Brazil, Tuesday, July 23, 2013. As many as 1 million young people from around the world are expected i
Clergy stand during a World Youth Day Mass at Copacabana beach, in Rio de Janeiro, Brazil, Tuesday, July 23, 2013. As many as 1 million young people from around the world are expected in Rio for the Catholic youth event. Pope Francis arrived in Rio de Janeiro on Monday to begin a weeklong visit to participate in the World Youth Day festival. (AP Photo/Silvia Izquierdo)