<p>New Orleans, 1853. A young Zapotec exile from Mexico named Benito Juárez disembarks at a fetid port city at the edge of a swamp. Years later, he will become the first indigenous head of state in the postcolonial Americas, but now he is as anonymous and invisible as any other migrant to the roiling and alluring city.<br>Accompanied by a small group of fellow exiles who plot their return and hoped-for victory over the Mexican dictatorship, Juáre...