Tales about treacherous Jesuits and scheming popes are an important and pervasive part of European culture. They belong to a set of ideas, images, and practices that, when grouped under the label anti-Catholicism, represent a phenomenon that can be traced back to the Reformation. Anti-Catholic movements and sentiments crossed boundaries between European countries, contributing to the early modern consolidation of national identities. In the nineteenth century, secularist movements adopted and transformed confessional criticism in a new internationalist dimension that was articulated across...