Sorry to sound heartless, but it was bloody ages ago, and no real good can come of it now.
Nobody did anything on purpose, people - rightly or wrongly - did what they thought was best as they could see it unfold. Lets face it, the root cause was the venue was unsuitable. But in todays sad society, there has to be blame
Maybe they didn't before the event, but after the event there was a conspiracy, an organised cover up and a wall of lies which didn't fall apart for over 25 years,and that was what the families fought to unvcover for all those years.
This started while the tragedy was unfolding and was organised from the top of the police force concerned and ran right through the ranks down to special constables, by pressure from their superiors to alter statements to lie about the people who had died, to perpetrate the perception that it was pretty much their own fault.
If a child of mine died in those circumstances I would hope that I would be brave, persistent and dogged enough to take on the establishment and not let up until their lies had been uncovered.
I admire the families for doing what they did, and I hope the officers involved spend years behind bars for the lies they told.