Self-defense?  Yes, but not just for personal defense.  As I said here, I often run out of time in commenting on others’ posts.  Here, Kevin Williamson (whom we have interviewed in the past) talks about the real reason that the Second Amendment exists – the very uncomfortable reason, for Progressives and Big Government types that believe Government can only be for good, is that the Second Amendment is to be able to fight Tryanny – from without OR from within:

Brett, like practically every other person seeking to diminish our constitutional rights, either does not understand the purpose of the Second Amendment or refuses to address it, writing, “Gun advocates will be hard-pressed to explain why the average American citizen needs an assault weapon with a high-capacity magazine other than for recreational purposes.” The answer to this question is straightforward: The purpose of having citizens armed with paramilitary weapons is to allow them to engage in paramilitary actions. The Second Amendment is not about Bambi and burglars — whatever a well-regulated militia is, it is not a hunting party or a sport-clays club. It is remarkable to me that any educated person — let alone a Harvard Law graduate — believes that the second item on the Bill of Rights is a constitutional guarantee of enjoying a recreational activity.

There is no legitimate exception to the Second Amendment for military-style weapons, because military-style weapons are precisely what the Second Amendment guarantees our right to keep and bear. The purpose of the Second Amendment is to secure our ability to oppose enemies foreign and domestic, a guarantee against disorder and tyranny. Consider the words of Supreme Court justice Joseph Story — who was, it bears noting, appointed to the Court by the guy who wrote the Constitution:

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