The mainstream press doesn't push for answers.
It's a vital question. In school shootings, we've learned that the answer is often yes. For example, Eric Harris at Columbine in 1999 was on Luvox, an SSRI antidepressant. These SSRIs are well known for pushing people over the edge into violence; and the manic effects can also motivate them to form grandiose plans for destruction. (See the website "SSRI stories" for documented accounts.)
In the last few years, the US Armed Forces have loaded down their personnel with psychiatric meds, which have led to suicides and killings.
Typically, at these shootings, pharmaceutical investigators show up to find out whether their drugs are involved, so, if necessary, they can clamp down on "information leaks" and instead divert the conversation to: "he had a mental disorder," as if that, rather than the drugs, was the key factor.
Comment: Whoa, talk about 'Moses' déja vu!
Stone 'tablets' with moral laws contained in them?
Thunderbolts in the sky?
Are we witnessing the origins of religion in real-time re-formation?
This story is exactly why everyone needs to read Comets and Horns of Moses!
Celestial Intentions: Comets and the Horns of Moses