The American Civil Liberties Union.
ACLU POSITIONGiven the reference to "a well regulated Militia" and "the security of a free State," the ACLU has long taken the position that the Second Amendment protects a collective right rather than an individual right. For seven decades, the Supreme Court's 1939 decision in United States v. Miller was widely understood to have endorsed that view.The Supreme Court has now ruled otherwise. In striking down Washington D.C.'s handgun ban by a 5-4 vote, the Supreme Court's 2008 decision in D.C. v. Heller held for the first time that the Second Amendment protects an individual's right to keep and bear arms, whether or not associated with a state militia.The ACLU disagrees with the Supreme Court's conclusion about the nature of the right protected by the Second Amendment. We do not, however, take a position on gun control itself. In our view, neither the possession of guns nor the regulation of guns raises a civil liberties issue.
There are a couple of points they're missing, namely that the right is recognized (not granted) by the Constitution, because "the people" were all considered potential militia members in the event of invasion or tyranny. It did not only apply to active members of militias because the Justification Clause was just one example of why the right to armed self-defense is a necessity of Natural Law. The right itself is not dependent on the Justification Clause, because the right was not established by the Constitution, but merely recognized.
More broadly, according to the Ninth Amendment, you cannot use any part of the Constitution to invalidate any right recognized by the Constitution, which is what happens when they claim that the Justification Clause prevents it from being an individual right. To do so is inherently contradictory, and sets a dangerous precedent for negating any individual right.
I get that they may not like guns or the idea of an armed populace, but that is irrelevant to the ultimate purpose of defending individual rights. To me, that sends a message that the ACLU is only interested in defending rights it deems valid, thereby attempting to supersede the Constitution.