This is so simple.
NPR is a government funded radio station infested with Democrats that has always acted as an arm of the Democrat Party.
Everyone knows that Democrats are prolific psychopathic liars. They can't help it. It's their nature.
They spread the government talking points which are mostly lies.
The one thing you can be sure of is that if NPR says it, it has a very high probability of being a lie.
The Democrats want school shootings.
They kill babies don't they? You think they wouldn't like to kill your kids too? LOL!
And lying to say there are more school shootings helps them in their bid to outlaw and confiscate our guns.
And if that were allowed to happen, that's when the REAL tyranny would begin.

You can bet your last nickel this story would have been censored on a lot of social media sites and msm for that matter, because it didn't fit their narrative.
Don't believe everything the msm says. Do your own research. You'll be surprised at how much you didn't know.

Exhibit A: Ukraine. Look what happened to them after they got rid of nuclear weapons!

While I have never owned any of those guns I wouldn't want to have to rush out and buy one because of what they have planned after the guns are outlawed.

Hint...it isn't good...