Anyone who remembers the 'bad old days' knows there were times when fans were crushed into inadequate spaces, and that there were dangerous crowd movements at times. To be honest, it amazes me deaths and serious injuries were relatively rare. A lot of the old grounds were hazardous if full, or near full. Many times I've been carried out of the Kippax in a crush at the end of the game with my feet literally off the ground. A laugh at the time, but anyone who went under would have been trampled to death.
Very much a case of: 'There, but for the grace of God, go I.'