Something like 350k or 400k students have been directly affected by gun violence in schools since Columbine. Let’s take the middle ground and say 375k.
That means these were kids who were in school when a shooting took place.
Now let’s multiply that by 4 or 5, to account for parents and siblings of those kids.
So we’re looking at somewhere in the neighborhood of 2+ million people who likely have psychological trauma from gun violence in schools over 25 years.
This doesn’t count teachers or administrators, or their families. It doesn’t count grandparents, extended family, or friends who may not go to the same school.
If we were to account for all the people who’ve been affected by gun violence in school, it’d be much more than .01% of the US population.