“From their small, rural college in Ayotzinapa, in mountainous Guerrero state just south of Mexico City, the students had gone on a spree of commandeering buses in the city of Iguala in hopes of reaching a demonstration, much as they had done many times before.” What was different this time was that police opened fire on the buses, killing several people. Later, 43 of the students went missing. That was back in 2014, but we don’t seem much closer to having an answer about what happened. And a new report suggests that the Mexican government “put up roadblocks on the path to answering those questions, raising the chilling possibility that the mystery of the students’ disappearance will never be solved.”