The Brennan Center for Justice recently published this history of the Second Amendment and the NRA. The Second Amendment was construed entirely differently in years past than it is now. The NRA was an entirely benign organization until a few decades ago. It’s amazing to see how something can evolve into its opposite, but that is par for the course for a symbolic species like human animals.

In the end, it was neither the NRA nor the Bush administration that pressed the Supreme Court to reverse its centuries-old approach, but a small group of libertarian lawyers who believed other gun advocates were too timid. They targeted a gun law passed by the local government in Washington, D.C., in 1976—perhaps the nation’s strictest—that barred individuals from keeping a loaded handgun at home without a trigger lock. They recruited an appealing plaintiff: Dick Heller, a security guard at the Thurgood Marshall Federal Judiciary Building, who wanted to bring his work revolver home to his high-crime neighborhood. The NRA worried it lacked the five votes necessary to win. The organization tried to sideswipe the effort, filing what Heller’s lawyers called “sham litigation” to give courts an excuse to avoid a constitutional ruling. But the momentum that the NRA itself had set in motion proved unstoppable, and the big case made its way to the Supreme Court.

The argument presented in District of Columbia v. Heller showed just how far the gun rights crusade had come. Nearly all the questions focused on arcane matters of colonial history. Few dealt with preventing gun violence, social science findings or the effectiveness of today’s gun laws—the kinds of things judges might once have considered. On June 26, 2008, the Supreme Court ruled 5-4 that the Second Amendment guarantees a right to own a weapon “in common use” to protect “hearth and home.” Scalia wrote the opinion, which he later called the “vindication” of his judicial philosophy.

After the decision was announced, Heller stood on the steps of the court for a triumphant press conference. Held aloft behind him was a poster bearing that quote from Patrick Henry, unearthed by the scholars who had proven so important for the successful drive: “Let every man be armed.”