The Who concert disaster
1979 CE.
Shown on the map at 39.097°, -84.505°.
The Who concert disaster was a crowd disaster that occurred on December 3, 1979, when the English rock band the Who performed at Riverfront Coliseum (now known as Heritage Bank Center) in Cincinnati, Ohio, United States. Amidst confusion about the concert's start time, not all entry doors to the coliseum opened; a rush of concert-goers into the few open doors resulted in the deaths of 11 people.
Text from the Wikipedia article The Who concert disaster, licensed CC BY-SA 4.0.