I don't agree. There's a stark difference between a car accident and a fellow human being pumping rounds into people in your local restaurant. The other driver is not trying to kill you typically.
Intention is all that matters, and why its attempting to damage social fabric.
I'm not trying to be flip. I'm saying that by any viable moral theory, you are catastrophically wrong.
I'm not changing a damn thing in how I live my life, and not even out of courage (i.e. the "we can't let the terrorists win" bromide that took over in America in late 2001). It just shouldn't matter that much to you, and it only prevails insomuch as you let these irrational fears get to you.