Everyone here had a fella in their class they jokingly suspected would shoot up the school if they had access to guns...
Add in internet brain disease on top of genuine mental health issues which some of these shooters suffer from.
America is also a powder keg politically post Trump era.
It's a recipe for utter disaster.
Somehow a significant percentage of people there equate guns = freedom. This is being pushed and seized upon by opportunistic politicians with no morals or concern for anything other than their own success.