But what is a norm? As I said 30% of (white) people are genetically predisposed to go to your definition "insane". Are you prepared to call 30% of population abnormal? and among blacks it's 60% by the way.And there's an actual reason why things like that are called being driven crazy. It's because the succession of events takes a person into a state where he's crazy. That's why people in a situation like that can plead temporary insanity - because all that shit made them insane.
I honestly can't see how you can read your post and see you describing someone who's having a normal reaction as opposed to an abnormal reaction.
The point of links in the original post is that these people are pretty normal statistically speaking and it would be mistake to just call them "insane" and be done with it.
I don't know anything about the link between your gene and the propensity for shooting people in response to minor incidents. Can you post a link to the study you're referencing or should I just shrug that off as irrelevant nonsense? I'm guessing it's going to be the latter, but am willing to wait for the accompanying data.
One does not just call people insane and be done with it. One recognizes that insanity is a thing and people can move in and out of it due to certain stressors, or have those stressors activate a latent propensity. Given the large number of auto accidents and the trivially small number of people getting shot after auto accidents, I'm thinking that you're using a fairly non-standard definition of "normal" here.