But his family already stated that he didn't have any mental health issues, and he didn't use drugs. He was a good boy, like by everyone, and fidden to go to college. He dindu nuffin. 
My youngest brother took his own life. He locked himself in a room, got drunk and blew his brains out. For the longest time our mom refused to accept that he did that. She was certain that someone killed him and this in spite of the room being locked from within, no signs of a struggle, etc. Sometimes, just sometimes, people refuse the reality of a situation no matter the evidence to sustain it.
Was probably experimenting with drugs. People refuse to get how dangerous some behavior is and still want to pass off responsibility. Sucks that the kid was shot but the cop didn't make him get high, stop taking psych meds, or whatever led to their interaction.
I feel worse for the cop in cases like this.
LEOs suffer terribly when they fire their weapon. It's no small thing to take a life but often it is done to save another and not always that of the officer. On certain drugs, people can be incredibly strong and do great harm to others including murder. I will say that it is a blessing of sorts (and that is wrong on so many levels but needs saying) for the officer that he too is black because this negates a major portion of what may yet come from the left, i.e., so-called "racism".
The autopsy will reveal what, if anything, was in the boy's body that caused him to go out of his mind. Sad on all counts, but I agree, right now I feel for the officer.