What should be looked into is the pharmaceuticals that have messed up the minds of many who were prescribed them. Also look into which pols receive donations from those who push these poisons.
Bingo. It also explains why the so-called medical community is so quick to dismiss mental illness as a factor in the shootings. They're afraid of liability for allowing these medicated nutcases to roam free.
You're wrong.
The drugs help a lot of people. They "free the will", and most of the time, for most people who take them, their "will" is to not suffer and to live as close to a normal life as they can.
The problem is that some people's craziness is a device, a defense mechanism if you will, to block or to obstruct their underlying evil, and when you free THEIR will with drugs you create a killer.
The psychiatric profession has abandoned its responsibility to protect society under the guise of "protecting their patients" from evil, judgmental normies like us, and this has to end.