People are crazy. Besides putting us all on mind-slaving drugs at birth...... there is absolutely nothing we can do to prevent this sort of thing from happen from a mental health standpoint.
I am so sick of people blaming some obscure facet of society like, "The mental health care system" with zero knowledge on whether or not any form of assistance was requested.
Or are you to tell me that mental health care folks should burst into everyone's home and forcibly conduct some kind of special brain examination???????