I haven't seen more than one or two articles discussing the psychotropic medications most of these mass killers had been taking by prescription from health care providers. These meds have been shown to cause violence and suicidal tendencies in the users. If enough victims will sue big pharma for millions, it might cut into their multi billion dollar profits and maybe they will remove them from the market. The px drugs are at the base of the problem. When one of these mass killers decides to off himself he decides to take as many innocent people with him as he can.