Catholic News Service PHOTO
  A woman prays in front of the World Youth Day cross during a visit to the Rocinha slum in Rio de Janeiro July 18. More than 320,000 registered pilgrims have begun arriving in Rio to take part in the main World Youth Day program July 23-28. (CNS/Reuters)
 
  A woman prays in front of the World Youth Day cross during a visit to the Rocinha slum in Rio de Janeiro July 18. More than 320,000 registered pilgrims have begun arriving in Rio to take part in the main World Youth Day program July 23-28. (CNS/Reuters)