Leo XIV, the first ever American pope, condemned the exploitation of the poor and called for unity in the church during his inaugural Mass in St. Peter’s Square, an event attended by world leaders, royalty and tens of thousands of believers.

VATICAN CITY (AP) — Pope Leo XIV, history’s first American pope, vowed Sunday to work for unity so that the Catholic Church becomes a sign of peace in the world, offering a message of communion during an inaugural Mass in St. Peter’s Square before an estimated 150,000 pilgrims, presidents, patriarchs and princes.