Ayotzinapa: A Timeline of the Mass Disappearance That Has Shaken Mexico

As of December 7, there are now 42 students from the Ayotzinapa Normal School missing after police in the city of Iguala, Guerrero, opened fire on their buses and kidnapped a group of 43 of them, in a case that has gripped the country and sparked protests globally. To help readers who might be unfamiliar with this story, here is a timeline of key events to understand the ongoing case.