While I would agree with much of what you said. Let us not look at it through a single lens. I lived in the US for a while and was shocked at how medicated that society is. A lot of these medicines are shown to rob people of empathy. Of course, a person without empathy will not think twice about shooting innocent people.

So while I am not discounting the cultural aspect. The fact is that this dependence of meds. should be taken into consideration. How much is it to blame? I don't know. Who knows? Maybe they are not mutually exclusive maybe meds are now apart of the culture. Either way. This $h1t is just crazy.