People love to point the fingers at the tool used to do evil things. Instead of addressing why the evil thing is happening.
Banning and restricting guns is a band aid solution that harms the general populace more than it benefits.
Bad actors that want to inflict harm are not concerned with using something legal to get the job done. There will always be inventive whackos out there that will find ways to hurt people. Guns or no guns.
The Swiss have almost the same firearm to people ratio as America ( at least compared to the rest of the world ) and under have far fewer of the same issues. I think this is largely because of cultural differences and availability for healthcare.