I have seen use-of-force training exercises that look very similar except there is actually a weapon being drawn. I don't think it makes the officer who pulled the trigger innocent, but I believe he behaved exactly the way he was trained, and holding him personally responsible would not prevent this kind of thing from happening again.
Note in particular it is a different officer who is talking in the video and created the whole situation.
Note in particular it is a different officer who is talking in the video and created the whole situation.