To Kant, the French revolution's central events were the transfer of sovereignty to the people in 1789 and the trial and execution of the monarch in 1792-1793. Through a contextual study, this Element argues that while both events manifested the principle of popular sovereignty, the first did so in lawful ways, whereas the latter was a perversion of the principle. Kant was convinced that historical examples can help us understand political philosophy, and this Element seeks to show this in practice.