They were arrested and held in without trial, in secret — that’s what a new report, as well as scores of grieving parents, allege. The kids, mostly male teens, stand accused of fomenting unrest. The ones who’ve made it out describe torture. Parents of missing kids say government authorities won’t tell them anything, and won’t let them see their sons. Even if the boys are eventually cleared of wrongdoing, the arrest alone may be enough to cut off their future — they’re automatically booted from school.