 Piacenza taught canon law at the Theological Faculty of Northern Italy and held several other posts, serving as the archbishop's press officer.He was the diocesan assistant of the ecclesial Movement of Cultural Commitment.He served as professor of contemporary culture and history of atheism at the Ligurian Higher Institute of Religious Studies as well as professor of dogmatic theology at the Diocesan Institute of Theology for the Lay "Didascaleion".