Chiapas, a state in southern Mexico, burst into international news in January 1994. Several thousand insurgents, given a voice in the communiques of Subcomandante Marcos, took control of the capital and other key towns and held the Mexican army and government at bay for weeks. Proclaiming themselves the Zapatista Army of National Liberation, they captured both land and headlines. Worldwide, people wanted to know the answer to one question: why...