96 people died as a result. The Taylor Report found that the deaths were caused by a failure of police control when they opened a gate to allow thousands of fans into an already-full terrace. Fans were crushed against the fences at the front of the terrace, which had been put there to prevent hooliganism.
One of the victims of this tragedy was Anthony Bland, who sustained severe crush injuries including crushed ribs and two punctured lungs, leaving him in a persistent vegetative state. He was 18 at the time. Although he could not see, hear or feel anything, his brain was still functioning. The doctors were of the opinion that Anthony would not recover.
The doctors , together with Anthony's parents, applied to court for a ruling that the doctors would not be guilty of murder if they stopped feeding him.
This was a new situation, which required the judges to create an original precedent. The judges reasoned by analogy. They decided that the feeding tube was effectively medical treatment which was no longer working. They confirmed that they would not find the doctors guilty if they stopped this "treatment".
You can read the full judgment in this case here.
Have a look at the Hillsborough Justice Campaign site too.