Protecting yourself is almost always against the law these days.
Having the means to do so I think is more akin to what you are referring to.
There's plenty of case law in Worshington on prosecution of folks trying to defend themselves. I expect the rate to increase over time, based on the number immigrating there from other, less salient locations.
Just cuz they let you carry it don't mean you are entitled to use it whenever you believe you need to. It just means they'd rather charge you with a greater offense is all.
BTW, Washington also has a law on the books covering the crime of Affray. So if for some reason you don't keep that hogleg hidden and someone sees it, however unintentional, you just broke the law and can expect to get charged. When they say they don't want to see it, they mean it.
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The ultimate result of shielding men from the effects of folly is to fill the world with fools.
-- Herbert Spencer, English Philosopher (1820-1903)