A blogger on the sports community weblog SportsFilter has collected some links related to the Hillsborough Disaster, a deadly crush that killed dozens of British soccer fans on April 15, 1989:

Hillsborough Disaster Recalled 20 Years Later: Twenty years ago today, 96 fans were killed and 766 more injured during an FA Cup semifinal between Liverpool and Nottingham Forest at Hillsborough stadium in Sheffield, England. Public memorials were held today marking the event that came to be known as the Hillsborough disaster. "Given all the evidence, it's impossible to believe or bear 20 years on no one is held responsible for one of sport's biggest disasters," says Peter Joynes, whose 27-year-old son Nick was among the dead. Some government officials are calling for the release of all government documents related to the tragedy, believing the role of police and rescue officials has never been fully examined.

The tragedy was reminiscent of the Who Concert tragedy in Cincinnati, Ohio, in 1979, in which 11 people were killed.

I attended a Barack Obama campaign event last fall, and as the crowd numbering in tens of thousands got bigger and bigger, I moved aside rather than moving up and packing in closer to see him speak. Large crowds in small spaces freak me out.