Teachers of the National Coordinating Committee of Education Workers (CNTE) block the surroundings of the International Airport of Mexico City, capital of Mexico, on Sept. 5, 2013. (Xinhua/Alejandro Ayala)
Teachers of the National Coordinating Committee of Education Workers (CNTE) block the surroundings of the International Airport of Mexico City, capital of Mexico, on Sept. 5, 2013. (Xinhua/Alejandro Ayala)
Policemen keep guard during a protest of teachers of the National Coordinating Committee of Education Workers (CNTE) who block the surroundings of the International Airport of Mexico City, capital of Mexico, on Sept. 5, 2013. (Xinhua/Alejandro Ayala)
