Sendero Luminoso or the Shining Path ranks among the most elusive, secretive, and brutal guerrilla organizations in the world. Once a radical uprising limited to the Andean highlands of Ayacucho, it is now a movement of national proportions that has woven itself into the fabric of Peruvian society. Unlike many other terrorists groups, Sendero Luminoso is founded upon an intellectual infrastructure crafted by the now legendary Abimael Guzman, a former philosophy professor. The body of the movement, however, is drawn from Peru's long-neglected Indian and mestizo populations. Peru's already...