The Chicago-born pope said that a gathering of young faithfuls in Rome was a "sign that a different world is possible."

Pope Leo XIV tells a massive crowd of Catholic youths they are a sign that a different world is possible: 'We are with the young people of Gaza. We are with the young people of Ukraine.'

Pope Leo celebrated the largest event yet of his nearly three-month tenure on Sunday, encouraging a crowd of more than a million Catholic young people gathered in a field on the outskirts of Rome to spread their faith.