Ursuline Convent Riots
1834 CE.
Shown on the map at 42.389°, -71.084°.
The Ursuline Convent riots occurred on August 11 and 12, 1834, in Charlestown, Massachusetts, near Boston, in what is now Somerville, Massachusetts. During the riot, a convent of Roman Catholic Ursuline nuns was burned down by a Protestant mob. The event was triggered by reported abuse of a member of the order, and was fueled by the rebirth of extreme anti-Catholic sentiment in antebellum New England.
Text from the Wikipedia article Ursuline Convent riots, licensed CC BY-SA 4.0.