The root cause is mental illness, and the complete and utter failure of the health care system in this country. This is more evidence that we need universal health care including mental illness than trying to pass more laws to take guns from law-abiding citizens.
Of course if there is a move to take guns away from criminals, I must have missed it as they all want to take guns away from law-abiding citizens.
Did I not see that this 19-year-old was already on the FBI’s radar? How is coming after my gun going to fix that?