PARIS, 1871 — In the aftermath of the Prussian invasion of France, and the collapse of the Second Empire, two rival governments arise. One of them is the Paris Commune. Its headquarters: the city streets, the blazing foundry of radical democracy. The defense of the Paris Commune will depend on its citizens, the soliders of the National Guard. The other government is based in Versailles. Its headquarters: the old seat of royal power, that infamous abode of aristocrats. Its ...