This book provides a meticulous examination of the ideology, structure, and functions of the papal police as they operated in the city and province of Bologna in the period before Italian unity, and in doing so offers an important new interpretation of the Risorgimento. The author argues that after the Restoration the new police soon found themselves incapable of dealing effectively with overwhelming problems of crime and public order. In allowing Bologna's elites to arm themselves in posse-style "citizen patrols" on two occasions, the papal government had opened the doors to reform and, eventually, revolution.