A relative of a missing student holds a poster with the image of Christian Alfonso Rodriguez Telumbre, as she takes part during a march to mark the disappearance of the 43 missing Ayotzinapa College Raul Isidro Burgos students in the state of Guerrero, along the streets in Mexico City, Mexico, September 26, 2018. Prosecutors announced the find of the bone fragment of Christian Alfonso Rodriguez Telumbre on July 7, 2020. Picture taken September 26, 2018. REUTERS/Henry Romero