The trouble is, for most in California the fact someone owns guns and likes to practice with them is proof posivitve they are "mentally ill or unstable folks". So it's a bit of a catch-22.
“Most people agree that guns shouldn’t be in the hands of mentally ill or mentally unstable folks, the question is how to remove mentally ill or unstable folks from their weapons,”
We really shouldn’t let these lefties get away with framing the issue in this way. If mentally ill people are not responsible enough to handle firearms, then those mentally ill people need to be in treatment, where they can’t harm society. The solution is not to futilely try to keep them away from firearms, or to futilely try to childproof the entire world so they can roam free.