The volume control in your video wouldn't work for me, but maybe that's a good thing. I wonder what the verbal exchange was, but it does not matter. This is clearly another murder of an unarmed man...
Edit - found the full exchange on YT -
This fucking pig could not WAIT to shoot this scared white kid. The kid crawls to the cop exactly as instructed and is crying, begging the cop not to shoot him. So the pig does anyway. The pig is psychotic, drugged out of his mind, or both. I've never seen such a blatant murder, this is truly upsetting...