It struck me from that video is that the BLM crowd are acting like this is a video game.
People aggressively go after each other and get shot, and the winner gets to declare victory.
In the twisted minds of these idiots, everything is fair game, whether it is looting, throwing incendiary devices, or in this case trying to attack a competent shooter without ramifications, believing if they lose they can 'play' again. Only a fool would chase unarmed after someone carrying a gun who showed they can use it.
How wrong they are. This is real life, with real life consequences.