Part of the problem was also, apparently, the scanners. Jonathan Wilson of the guardian podcast had a genuine ticket and he advised that it took several times before it was recognized by the scanners. If that was occurring at other turnstiles then the stewards may well have thought tickets...
To be fair, those in red shirts may well have had tickets but if people behind you in the queue are forcing their way through there's not much you can do about it.
But isn't that what happened at Wembley? Get through the first barrier and then work out how to get through the next one only at Wembley there were reports of either fans already inside or even a steward opening a door into the stadium itself.
And the liverpool fans wouldn't have been giving it back! 6 of one half a dozen of the other only the wall that collapsed was on the Juventus side. A twist of fate and it could have been the liverpool fans allocated that section...
It all comes down to personal responsibility as opposed to herd mentality.
Arguably, Hillsborough was the result of all the actions of those fans in the past that saw football as the opportunity for trouble. 60s and 70s pretty much saw fights at every game and many spilling onto the pitch...
Weren't exocets built by the French?
Also, have you any evidence that that was the chants and were there chants by the Liverpool fans? It was football culture which had been allowed to deteriorate unchecked for far too long.