Huge Crowd Overflows St. Peter's for Historic Canonization

The crowd in St Peter's square during the canonization Mass of Popes John Paul II and John XXIII on April 27, 2014.MASSIMO SESTINI / Italian National Police via AFP - Getty Images

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Two 20th-century popes who changed the course of the Catholic Church became saints Sunday as Pope Francis honored John XXIII and John Paul II.

An estimated 800,000 people — many of them from John Paul II's native Poland — filled St. Peter's, the streets around it and bridges over the Tiber River, a huge turnout but only half the size of the crowd that came out for John Paul's 2011 beatification.

— The Associated Press