I dont want to get enormously into it, but nobody should be pepper sprayed. It's out of line.
However, they couldn't open the gates. The ground was clearly full. It would have been dangerous to do so. Anyway who has any understanding of football safety knows that.
There are lots of factors that led to that, of which there is certainly some blame on the ground security, but the decision not to allow overcrowding was a sensible one.
As I've said, I feel sorry for the people who had bought a genuine ticket, through the club, who were unable to gain access.