The Sixth Sun: Mayan Uprising in Chiapas (1995) Online

does a good job of explaining in unsensationalized terms what the Zapatistas are about, and how U.S. corporations, NAFTA, and the WTO are directly responsible for the uprising. The Zapatistas are not depicted here as terrorists, although they may well strike terror into the hearts of the world's richest CEOs, (and for good reason), but as defenders of peasants' rights who chose guerilla tactics after more civil methods were closed to them by an indifferent government.