The Jubilee riots of 1875 were an outbreak of Protestant-Catholic sectarian violence in Toronto. The riots happened during a series of Catholic religious pilgrimages related to the Jubilee year declared by Pope Pius IX. A second riot broke out on October 3. Stone throwing began at and was soon accompanied by pistol fire. This led to a full-pitched battle between pilgrims and anti-processionists, which spilled out into multiple locations. Many were hurt, with rioters being beaten back by police. Cavalry, under the command of the mayor himself, was brought up to defend the pilgrims.