TIL in 1989 96 people were killed at Hillsborough Stadium in Sheffield, England after they were crushed due to overcrowding. Although match attendees and hooliganism were first cited as the cause, a 2016 inquiry found the police to be at fault due to their mismanagement of the crowd.

https://www.theguardian.com/uk-news/video/2016/apr/26/hillsborough-inquiry-anatomy-of-a-disaster-video