In my country we have many shooters killing wives, girlfriends, children, whole families. I've noticed ALL of them are said to be on pills and antidepressants.
So I've asked a friend of mine, who's a well respected scientist in biochemical field, about all that.
His answer: "THIS IS WELL KNOWN among researchers and scientists worldwide. Antidepressants like Prozac trigger violence and killing. But nobody says anything because of big pharma."
This was YEARS AGO. I never forgot his face while he was saying this.