The only option that works effectively is constitutional carry.
You can’t stop the existence of bad people. You can only help ensure that the good ones can defend themselves.
How exactly were all these mass shooters stopped again?
The guy that walked into the Missouri Walmart with a rifle slung was met at the door by whom?
That’s the “solution” my friend.
“The only option that works effectively is constitutional carry.”
Maybe so, but we’re a generation or so removed from having a public that can deal with large numbers of armed people in public. Walk around your block open-carrying and you’ll quickly light up 911.