He researches North American Catholicism and Catholic social teaching. Rademacher earned his PhD in religious studies from the Catholic University of America in Washington, D.C., and has been teaching courses that explore lived religious traditions as well as religious radicalism—especially the Catholic peace movement—in the work of Paul Hanly Furfey, Dorothy Day, Thomas Merton, and the Berrigan brothers. He continues to foster rich community collaborations (for his students and himself) with the intentional Christian community, Norristown (PA) Community House, and the local homeless outreach center.