And no, I'm not talking about wars - which have always been with us - or tribal killing - same - or sexual divancy murders like Jack the Ripper. Give me some of the "many" killings where individuals went on shooting sprees for the exclusive purpose of killing as many people as they could - people they had never met... prior to antidepressant etc.
Who said anything about shooting? There are many ways to kill.
I’m not going to spend time looking up mass murderers for you. Off the top of my head, in recent US history but before SSRIs, try Charles Whitman, Andrew Kehoe of the Bath school massacre (worse than the Newtown murders), Charles Manson, Richard Speck, and on and on. And that’s just in the US.
Untreated mental illness is a danger to us all. Denying it doesn’t change that.