Parents of missing students in Ayotzinapa protest outside the federal prosecutor's office in Mexico City, Mexico, 25 June 2019, from where they demand the appointment of a special prosecutor for the Iguala case, where the 43 students disappeared, after the dissemination of a video that shows a case of alleged torture by the authorities to one of the alleged cases involved in the disappearance of the students. EFE/ Madla Hartz - Stock Photo