The radical Catholic movement that takes its name from the Catholic Worker paper and the communities inspired by it has had an important influence on the life of the Church both in the United States, where it was founded, and elsewhere in the world. This paper looks at ways in which its distinctive theological vision and praxis can revive and focus the presentation and living-out of Catholic Social teaching in this country – particularly with regard to unconditional love for the poor, a commitment to pacifism, and a grounding of this work in Catholic sacramental and devotional life.