There were TV cameras - originally covering the Liverpool vs. Nottingham Forest match - which recorded what happened. And of course what they recorded was a witness whose silent testimonial helped greatly in the subsequent inquiries & hearings which ultimately resulted in justice for the families of the Hillsborough 96. PROTIP: Eyewitness evidence is notoriously unreliable in a court of law, which is why forensic evidence is necessary: and that videotape was more than sufficient.
...now can you provide us with similar visual proof, Potatobrain? It's okay, we'll wait. As did those relatives: for Justice.
Fact is, so-called 'Truth' is destroyed by Facts. And unlike you, for those mothers & fathers of those 96, 'tis a case of You'll Never Walk Alone.