When you Know Psychotropic Drugs are Involved in a Killing or Mass Killing

Most of the time if not all of the time. Police and the government will not disclose if a killer mostly with guns, but not always was on anti-depressants or psychotropic drugs. We simply have to read the tea leaves.
In most mass killings the killer is a male
The killer has no previous history of violence. Many cases the killer is a teen, so their person crime or conflict history is minimal.
The shooter kills themselves or attempts to in the act of mass killing. There is no win or exit for the shooter. The killer is virtually in a trance and shoots shoots shoots or stabs with no plan or strategy to flee. The killing is not killing in the act of a robbery or kidnapping with demands. It is just kill everyone
Family, co-workers and friends say the killer was normal. Sometimes others will say they were loners, but the killer is generally “normal”.
This is the key. The killer has a history of psychiatric care. This doesn’t mean just psychiatrist care since a medical doctors will prescribe psychiatric drugs most often. It is also safe to say psychiatry and the medical profession are drug pushers. There is lots of money in psych drugs
If the killer has a history of seeing a psychiatrist even once then you can pretty much guarantee he has had exposure to some psychotropic drugs.