Analogies between the First Amendment and the Second (and comparable state constitutional protections) are over 200 years old. District of Columbia v. Heller itself makes them, and they can often make sense. But Guns as Smut does something peculiar: It analogizes a core category of private arms to one of the least protected and marginal categories of speech (obscenity). It's hard to see any justification for such an analogy, other than a purely instrumental one.
The premise of the First Amendment's obscenity jurisprudence is that obscenity is historically recognized as one of the "limited areas" of speech that "lack any serious literary, artistic, political, or scientific value," and are thus "not protected by the First Amendment." None of this analysis applies to guns. Possessing guns is traditionally legal. Guns do serve the self-defense value that the Court has found to be embodied in the Second Amendment. And, Heller held, ordinary guns are at the core of "arms," not on the margin.




