very few mass shootings are committed by sociopaths. Planning has nothing to do with being a sociopath. Severely mentally ill and schizophrenic people can plan things too.
Sociopaths are far more likely to be serial killers (like BTK and Ted Bundy). Also, sociopaths are far less likely to commit suicide, which often happens in mass shootings. Mass shootings are not the same thing as serial murders making your comparison between BTK & Ted Bundy versus Adam Lanza & James Holmes is laughable.
BTW - AsPD is often thought to be caused by a genetic brain defect or deficiency but people with AsPD know the difference between right and wrong - they just don't care. They also have a firm grasp on reality. People with paranoid schizophrenia often have their whole perception of reality radically altered, so their ability to distinguish between right and wrong may be impaired. People with AsPD are notoriously resistant to treatment (hell, there isn't really even any treatment for them, treatment meant for other PDs or regular therapy will make them WORSE), where schizophrenics often respond to medication.
And estimates are around 4% of the population consists of sociopaths - the vast majority are not killers. They may wreak havoc in other ways, but a small percentage are killers and an even smaller percentage are serial killers (usually serial killers are sociopaths who have also endured horrendously abusive childhoods). Heck, many aren't even criminals, since the sociopath is usually highly driven by self interest, and, let's face it, most would rather stay out of prison. Only the dumb ones are the ones who end up in the courts over and over again. The smart ones know how to manipulate the system to their own benefit without crossing the legal lines and getting themselves in trouble. Kind of like a 'good' internet troll. So your 'plan' would miss a huge percentage of sociopaths.
Besides, every country in the world, in a remarkably even spread around the world, has sociopaths. Yet the US is tops in mass murders and gun deaths. Perhaps, just perhaps, it's the guns.
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