In a perfect nation, the only legal rapid fire weapons with high capacity magazines would be in the possession of people who protect politicians from people wielding illegal rapid fire weapons with high capacity magazines.
Is that logic flawed?
Who protects the common innocent mass - the great unwashed - from criminals? The answer goes something like this. "They are on their own. They have no status, no elite cadres of bodyguards and no need for bodyguards because they are not elite. If they have a problem, they can call the police. And the police will come if they are not busy protecting (higher priority) politicians."
Those who think that this idea makes sense also buy off on the notion that the State should have a monopoly on dispensing "legitimate violence".
When you look at the photo (right) you may ask yourself, "why is that chucklehead smiling?" Why the shit-eating grin? Then if you look closely down to the border of the photo (lower left) you'll note that he has a holstered Glock 21 (chambering a .45 ACP). Are armed people happier people?