[zeugma]

I think most cops are going to neutralize anyone on the scene with a gun first and foremost.

Right. Because you have no right whatsoever to protect yourself or your property.

[Jonny7797]

Not the point. I suspect the cops had no idea who was the aggressor and who is rightly defending themselves. The arrive and see a guy with a gun, they are going to disarm him first and ask questions later.