> It wasn't being "brandished" or pointed at anyone.

This is kinda missing the point, from my perspective. The reason the shooter thought Gamboa (the guy with the assault rifle) was a threat is because he was walking with an assault rifle in his hands rather than slung over his shoulder. It's the same difference as someone holding their handgun (down pointed at the ground) versus keeping it holstered and it's in how quickly the wielder could aim and fire. It didn't need to be brandished at the moment because it could have been in less than a second.

All things considered, I don't think Gamboa had bad intentions but I do think his actions that day were stupid. The shooter made a bad call for a bad outcome but it still doesn't make sense to pin the blame entirely on them.

The shooter here was a police officer firing on a civilian operating within the confines of the law. The shooter ended up missing and killing someone else.

Note, that to shoot this man, the police officer also held his gun in his hand. I hope you're at least consistent, and would also say "it doesn't make the sense" to put blame "entirely" on someone if that someone goes around shooting police officers as soon as their hands touch their guns.

> The shooter here was a police officer

The shooter was a civilian volunteer.