You need to watch the video. The black guy is a 2nd amendment advocate.
He lays it out why the customers actions were appropriate.
There are times that when a Sheep Dog needs to act, he acts aggressively to the mind set of taking down a threat to the point of being sure the threat has been removed before he can go back to acting passively.
When he is finally found, his defense should be was the awakened Sheep Dog.