I watched this a bit ago. Even watched both videos many times. Sad.
Now, in your link and what I read earlier, never does the reporters mention if the gun was legally registered, stolen, or if it acted on it's own. It is placed as gun violence. That is the category.
Perhaps the dead man was acting in self defense? He did dodge a punch. An altercation was happening. Not everyone here has experienced high stress situations other than spilling coffee on the counter
, but those that have know that the shooter may have been given orders that he really did not hear/process until it was too late.