Hearing "gun" and opening fire on anything that moves is irresponsible. No one should be shot by an officer of the law, much less a federal officer who are supposed to be better, without a clear and present danger to themselves or others. There was not.
Same for Renee. Maybe the first shot was defensible even though Ross put himself in danger. The subsequent shots were not. It was no different than if someone broke into my house and I shot them...then when they were down, I walked up and put three more rounds into. The first round is okay, but those last three rounds are considered murder...even in Texas.
The tactics of Trump's secret police indicate poor training and to be thuggish. You know, just like back in the old days.