Well, I'm convinced! So which is it that makes them shoot up people? Being on their meds, or being off their meds?
It would be quitting them, obviously. Or failure to get them. They are godsends for sanity maintenance purposes when chosen well (out of many dozens of possibilities today), but they don’t cure the problem.
If someone’s that genuinely risky then that someone should be followed up on closely if not kept in the proverbial insane asylum. A more sincerely Christian society would have better answers to such situations which would embrace both spiritual and medical worlds. Everything that is not in itself sin can have a good use.
The problem is that the meds only magnify over time, very real spiritual problems. Therefore, when off or sometimes even on,those demons will talk to the person and get them to act out their will...the will to try and get people into hell.