This article revives consideration of the Industrial Areas Foundation (IAF), a network of Alinsky-style community organizing institutions supported by the Catholic Church, as an object of theological and ethical reflection. After describing the IAF and its organizing practices, it advances two claims. First, the IAF offers Catholic social teaching a concept of power that can sharpen its understanding of social change. Second, the IAF offers a promising model of parish social ministry. Specifically, it offers a pedagogy and praxis of political agency that enhances the parish's ability to live out its calling to be the church, and to be a mediating institution of public life. Such a model integrates evangelical impulses into the “public church” framework for conceiving Christianity's relationship to civil society.