Pope Leo XIV canonized Carlo Acutis and Pier Giorgio Frassati as saints in a ceremony attended by about 70,000 people in St Peter's Square. Acutis, the first millennial saint, is known for his tech legacy and miracles attributed to him. Frassati, from a prominent family, dedicated his life to the marginalized and died young from polio. Both figures serve as relatable role models for the next generation of Catholics.