The Chicago-born pope addressed a crowd of 30,000 in a live-streamed message from the Vatican: "Build up community [and] friendship as brothers and sisters."

The pope urged Catholic faithful to be a "light of hope," to serve others, and to make the world a better place.

Thousands of faithful Catholics gathered at Rate Field on Saturday to celebrate Chicago-born Pope Leo XIV. "I'm just appalled," one person fumed. "Repulsed." "No one from the Government has contacted us to ask, ‘Can we do anything to help?’ ” said Yasmine Hassan, whose sister-in-law was on the flight