Not that is will make any differents to the Far-Right racist thugs who have taken over this forum, but this his how it was summed up by the excellent Ian Dunt in the i Paper, quoting the comments made by the judge at the time of sentencing.
"No one has anything kind to say about the police officers who attended to Henry Nowak on the evening he was stabbed, but it is worth reading the judge’s remarks. It does not necessarily absolve them from blame, but it places events in a context that a two-minute video cannot."
“The police were given a convincing but wholly false narrative of the incident. It was dark and Henry was wearing a dark top. The entry damage caused by the knife through it would not have been obvious …
“It is the experience of the criminal courts that sometimes someone arrested and handcuffed will feign an injury in the hope they may be released. These police officers were faced with having to make quick decisions in pressurised circumstances about the correct way to act.”
"These are the subtleties and complexities of a situation which looks much clearer now than it would have done at the time."