Not really what happened, was it? It's what you were told happened, though.

I mean yes, it's what the medical experts and reports told us happened (even the lead defense witness merely advanced alternative theories about how the restraint could have contributed to his death in ways which wouldn't make the officers culpable rather than pushing the 'overdose' angle, whilst also conceding that the officers' failure to attempt to resuscitate him after detecting no pulse was a contributory factor in the death).

But clearly nothing can compare with what your favourite partisan source tells you happened.

It's what the coroner told us happened, yes. It's also what the video evidence we saw with our own eyes said had happened. It seems very likely to be what really happened, unless you have evidence you're hiding from everyone else.