Gerald Schlabach wrote that a key test of progress for Catholicism in its dialogue with the historic peace churches on nonviolence and the use of force would be that the church's teaching on nonviolence would become “church wide and parish deep.” While modern Catholic social teaching has recognized nonviolence since the time of the Second Vatican Council, and Pope Saint John Paul II gave nonviolence strong, formal endorsement in his 1991 encyclical Centesimus Annus, the church's teaching on nonviolence is hardly known in the pews. If they are familiar at all with Catholic teaching on peace and war, most Catholics would know the just-war tradition, especially through the US bishops’ 1983 pastoral letter, The Challenge of Peace. But the newer and still relatively slight teaching on nonviolence is hardly known at all. Only by rare exception do Catholic preachers address issues of peace and war.
When Church Teachings and Policy Commitments Collide: Perspectives on Catholics in the U.S. House of Representatives