I just don't get it clearly.
I cannot understand how with all the towering intellects on display here, nobody seems able to comprehend a world where the answer is not yes/no.
Why did the police outside open the gates? Because they were evil? Stupid? Lazy? Saw an opportunity to crush some football fans?
The decisions made by the police stemmed from something, and from my experience of football it will have been the situation outside the ground. In my experience that atmosphere can be toxic, back then I'm pretty sure evidence suggests things were worse.
In my mind I cannot see my way to a scenario where there is no culpability whatsoever on fans outside.
Oh, and just to clarify, that is not blaming them or whitewashing the police. Just in case anyone strugglesto grasp that point.