“Every generation needs a new revolution,” said Thomas Jefferson, and his thoughts were far from radical: almost all the Founding Fathers were obsessed with the potential for insurgency on U.S. soil. The Constitution is filled with provisions that made such a scenario conceivable. “Future citizens will need muskets to assassinate their oppressive viceroys,” James Madison might have hypothetically remarked during the intermission of a slave auction. “In fact, this is probably the second-most important freedom any of us will be able to come up with. Somebody should write this shit down.”