The causal model for gun violence is simple. Motivation, and access to guns. We can and should address motivations. Reducing access to guns has a strong effect too, evidenced by other countries people bring up "mass knife murders" of like 5 people in.
Arms get tired with knives. Cars can't drive everywhere. Bombs and explosive devices take special skills. Restricting access (even indirectly, through increasing cost of ownership via mandatory insurance purchases, required registration of last owner of record [and having that owner culpable when their weapons are used], and so forth) reduces gun death.
Part of it is the notoriety and that comes with getting a large number - and if you can't do it will bullets - they will discover fire / carbon monixode, bleach and.. heck I'll bet there's a new fake ticktak challenge showing these things and more. how to recon to turn off AC and disable sprinklers and chain doors.. and the counts will be much higher.
I submit we need to focus on things like teaching conflict resolution, and have peer groups that can help the bullied and the slighted and things like that will likely have a better impact on changing these things.
(there's not enough counselors and they don't have enough reach when they are available)
I mean stressing the kids to learn geometry (and not conflict resolution) and just ignore the bullies is not working.
luckily locking doors and other methods can help with the bullets issue, that won't prevent mustard gas or a bus exhaust from penetrating and making someone famous.
Let's test thst assertion.