la-ahagman-1479758397-snap-photo Published December 24, 2016 at 750 × 422 in In Nigeria, schoolboys turned killers and came after their ex-teachers and students ← Previous Next → After missing years of schooling because of attacks by Nigerian Islamist extemists, Boko Haram, these teenagers in a Maiduguri refugee camp have returned to school. (Robyn Dixon / Los Angeles Times)