I guess the trick is to figure out how to make it mandatory for those “living at the mercy” to own guns. And not the thugs themselves.
Looking at the mentalities alone (Feel free to grasp that which produces and drives said mentalities on your own.), of both parties (much less, the zillions in between). This is not a pretty picture where crime rates drop and everyone lives in peace.
“Berkeley” ?? Was that a shot?

(or should I ask: A troll?)