Parents of students missing for 2 years live in classrooms

They turned classrooms at their children's college into dormitories, sleeping on the floor, but parents of 43 Mexican students missing since 2014 won't rest until they find them.

The mothers live in one classroom that still has a whiteboard, while fathers bunk in another. Mosquito nets hang over their mattresses, but that didn't stop one mother from being infected with Zika.

Two tables serve as makeshift altars with photos of their boys next to religious icons. They pray to see their sons alive again, two years after they disappeared in a case that remains unsolved, causing widespread anger at the failure of President Enrique Pena Nieto's government to find the students.