This video shows precisely why a black man might run when stopped by a police officer. I'm amazed people have to ask why he ran, after all the incidents that have been publicised recently. Why did a traffic stop result in the officer getting his taser out? This man used to be a coastguard, for heaven's sake, it's hardly American Gangster territory.
Black Americans are justifiably afraid of the police and have no confidence that they will be treated properly or even legally. It is pretty pointless to argue that all they have to do is stand still and comply with all requests. They could do that and yet might still have drugs planted on them, be framed in other ways or just shot anyway.
What white people do and think and feel and expect when dealing with police officers (except perhaps for very poor and vulnerable white people) is not relevant here. It is no guide to how American police will frequently act with black people. Just ask Rodney King.
The US Supreme Court has held an officer can only shoot a fleeing suspect where the suspect represents an immediate danger to others. I imagine the officer concerned knows the law. So he must have known there was no possible justification for shooting him in the circumstances-hence planting evidence.