How do you stop this?

.... well, literally every developed country but us has figured out how to take that moment of infamy away from them. I wonder what it is that they're all doing differently from literally just us.

What could that be, seeing as every developed country has the same problem- crazies who go on killing sprees. The only difference is the instrument of death.

No! They DON'T have the same problem! They have a much much much smaller problem where the country goes into complete shock when they ONLY get one mass shooting in twenty seven years where ONLY 5 people died - numbers that we in the USA are jealous of!!!

So let's switch out our instruments of death for theirs because we're the only ones using instruments of death that ACTIVELY MAKES THE SITUATION WORSE.

So I give up my ar and trade it for gas chambers? Or islamists driving 18 wheelers?

I'm not sure you've familiarised yourself with what's actually legal in other countries but again, they're objectively having better success with this.

Or blight supremacysts [see what I did there?] driving a van full of fertilzer?

Population differences. Try "per capita"

Did. We're still worse.

Nope. Mexico is worse and has a total ban on guns.