Pope Leo XIV released his first encyclical Monday, outlining his priorities in leading the world’s 1.4 billion Catholics. While the focus of “Magnificent Humanity” was heavily on his concerns about AI, the pontiff also apologized for one of the Church’s historic wrongs: supporting the slave trade. To learn more, The World’s Host Carolyn Beeler spoke with Father Chris Kellerman, a Jesuit priest and the author of “All Oppression Shall Cease: A History of Slavery, Abolitionism, and the Catholic Church.”