There is no de-escalation training that can build better policing. There is no video monitoring that can hold police accountable. So long as cops can say, "I was afraid," even when video evidence shows that they are lying, they are legally entitled to commit murder.
Patrick Harmon, a black man with, according to his sister, psychiatric disabilities, was pulled over for biking without a light. As the encounter escalated, he ran away and the police shot him in the back. Later, they said it was a terrifying encounter ... but video demonstrates that this was not the case. No weapon, no threats, just a scared man being non-compliant.
There is no reason to expect justice here, because our system doesn't promote justice. It promotes compliance.
Do not share the video. No one needs to watch it. We know what it shows.