In the summer of 1993, about 400,000 youth from around the world came to Denver, Colorado to attend World Youth Day. Like a Dead Head Concert, the main attraction for those young people was a 73-year-old spiritual rock star - Pope John Paul II. Years prior to World Youth Day, a number of cults - what the Catholic Church terms "Movements of the Spirit" - began their own magnetic draw on youth all over the world. Hardly known to the vast majority...