St. Louis bullfight riot
1904 CE.
Shown on the map at 38.650°, -90.300°.
On June 5, 1904, thousands rioted in St. Louis, Missouri, north of the 1904 World's Fair, after a bullfight was canceled by court order. The St. Louis bullfight riot injured a handful of people and burned down the Norris Amusement Company arena, disrupting the World's Fair for one day.
Text from the Wikipedia article St. Louis bullfight riot, licensed CC BY-SA 4.0.