Hundreds take to the streets of Mexico City to demand justice in the case of the 2014 disappearance of 43 Mexican students from the Ayotzinapa teacher training college, who were travelling on buses from the southern state of Guerrero to a demonstration in the capital before they went missing. Last year, a truth commission tasked by the government to investigate the atrocity branded it a "state crime" and said that the military shared responsibility, either directly or through negligence. Earlier this week, eight soldiers who had been detained for the alleged involvement in the case were released from their temporary detention by the Mexican justice. IMAGES AND SOUNDBITES