Love it or hate it, the Second Amendment provides the constitutional framework for American gun laws. As with all things constitutional, Americans are adapting 18th-century laws to fit 21st-century lives. But in reality, the concerns of the Founding Fathers had little to do with either side's position in the modern gun-control debate. None of the issues animating that debate - from "stand your ground" laws to assault weapons bans - entered into the founders' thinking.
Yet because both sides in debates about the Second Amendment invoke what the founders would have thought, it's important to look at what they actually intended.
1. The founding fathers were devoted to the militia.
Read the debates about the Constitution and the Bill of Rights, and the militia's importance leaps off the page. Alexander Hamilton, writing in the Federalist Papers, called a well-regulated militia "the most natural defense of a free country." His anti-Federalist critics agreed with the need for a citizens' militia, writing that "a well regulated militia, composed of the Yeomanry of the country, have ever been considered as the bulwark of a free people."
Their disagreement was over how best to ensure that the militia was maintained, as well as how to divide up the roles of the national government versus state governments. But both sides were devoted to the idea that all citizens should be part-time soldiers, because both sides believed a standing army was an existential threat to the ideas of the revolution.
2. The Amendment's primary justification was to prevent the United States from needing a standing army.
Preventing the United States from starting a professional army, in fact, was the single most important goal of the Second Amendment. It is hard to recapture this fear today, but during the 18th century few boogeymen were as scary as the Standing Army - an army made up of professional, full-time soldiers.
By the logic of the 18th century, any society with a professional army could never be truly free. The men in charge of that army could order it to attack the citizens themselves, who, unarmed and unorganized, would be unable to fight back. This was why a well-regulated militia was necessary to the security of a free state: To be secure, a society needed to be able to defend itself; to be free, it could not exist merely at the whim of a standing army and its generals.