2 million Catholic faithful join Pope Francis on Copacabana beach RIO DE JANEIRO, July 28 (UPI) -- A sea of people 2 million strong flooded Rio de Janeiro's Copacabana Beach Saturday night for a World Youth Day vigil with Pope Francis, organizers said. The pontiff stood on a large stage and exhorted young people to work to change society for the better and to rebuild the Catholic Church, which has experienced an exodus of members in recent years, the BBC reported. The young people in the street are the ones who want to be actors of change. Please don't let others be actors of change," he told the massive audience. Keep overcoming apathy and offering a Christian response to the social and political concerns taking place in different parts of the world. The night-long vigil service was to lead into a mass on Sunday, marking the end of the five-day festival and the pope's weeklong visit to Brazil.