Owen Hart (part 1‪)‬ Fatal Errors

Pro wrestling shares elements with Hollywood, with live sports, and with traveling circuses, but you would be hard-pressed to find another enterprise that routinely matched the World Wrestling Federation’s blend of spectacle and craftsmanship. They were the best at what they did. And yet, on May 23, 1999, during a live broadcast, one of their performers died in the ring. 
How could this have happened?