SmarterthanYou
rebel
More and more guns. We have the highest per capita rate of gun ownership of any developed nation on earth by a wide margin. That means there are more guns laying around that can be diverted to (stolen or sold) people who wish to do harm. This is emboldened by the last couple of decades of NRA lobbying to halt any meaningful gun legislation to protect people and a rise of the type of gun owner who fetishizes these things as opposed to using them as a tool.
so your explanation of why there are so many more school shootings is that guns turned people mentally ill and evil????? did they change the way they manufacture guns? did they find some new evil metal to make them out of?