https://en.wikipedia.org/wiki/30_June_Stadium_stampede
https://english.ahram.org.eg/NewsPrint/122539.aspx
https://www.nytimes.com/2015/02/09/world/middleeast/soccer-stadium-stampede-kills-at-least-25-in-egypt.html
https://edition.cnn.com/2015/02/09/africa/egypt-soccer-violence/
https://en.wikipedia.org/wiki/30_June_Stadium