Well I didn't say you couldn't fight. My proposal includes confiscation. Assume very aggressive pursuit of criminals with an unlicensed firearms. Like multi-county dragnet with blocked roads. Like we get O(100) cops for one gun. Most criminals will just probably keep it to cold arms.
People with guns lose fights too. Cold Arms are easier to assess and much easier to run from. Who said anything about a crime that's like asking in the current regime cocaine users what crime did they commit. I'm not suggesting arresting them. I want their weapons. They aren't using them to defend against tyranny so what good are they.
The United States of America has an oppressive government if they wanted to use their weapons to protect against tyranny today would be that day. But they don't the 70 million gun owners of America march in support of tyranny not against it.