Pope Francis celebrates a Mass attended by a reported 3 million people on Copacabana beach in Rio de Janeiro on Sunday, July 28, 2013, as he wrapped up his historic trip to his home continent. (AP Photo/Victor R. Caivano)

Photo by: Victor R. Caivano

Pope Francis celebrates a Mass attended by a reported 3 million people on Copacabana beach in Rio de Janeiro on Sunday, July 28, 2013, as he wrapped up his historic trip to his home continent. (AP Photo/Victor R. Caivano)