Yep
MN drove a man to pick up a gun and kill
He shot and killed his mother
He shot and killed his stepbrother
He shot and killed 3 girls in his local school
He shot and killed 2 boys in his local school
He shot and killed a woman in his local school
He shot and tried to kill 25 other people in his local school
He terrorised the rest of the survivors in the school
He terrorised the whole community as they will all have had family and/or friends in that school and likely know his mother and stepbrother too.
But its not the failing of the Canadian health care system
Or the justice system which allowed licensed guns to remain in the home
Or his fault as he could have unpluged from SM if that was a contributing factor to him choosing to take a gun and kill and attempt to kill.
But you do you.