So, here we have Trump being blamed for killings perpetrated by a pro-Sanders, anti-Trump pothead, who was thrown out of a Trump rally for disruptive behavior. That’s how our media work.
I doubt he was a pot-head. More than likely a Meth-head or Crack-head. PHs would just roll over and go to sleep. The only thing pot accelerates from the norm is an appetite for Twinkies, not explosive, random violence.