Most people feel we need to 'face the reality' of what happened in such a public, sudden manner. Knowing the mechanics of the bodily systems and impact of how George was mistreated are important for justice to be carried out effectively in the trials of the four police being held accountable.
There is more to consider about those roles, but this is about the physical evidence and biological consequences of the police applying pressure to George Floyd's neck and back while he was lying on his stomach on the pavement.