Ronaldo Schemidt / AFP - Getty Images
Demonstrators clash with riot police during a protest in Mexico City on Sept. 1, 2013.
Masked youths lobbed rocks at police in Mexico City on Sunday as a controversial bill to reform the education sector was approved by Mexican lawmakers.
Thousands of teachers have marched in the capital in recent days to rail against the reforms introduced by President Enrique Pena Nieto.
The lower house approved so-called secondary laws that regulate the tests that Nieto says teachers should take periodically to ensure they are up to standard or lose their jobs should they flunk.
Protesters march through Mexico City on Sept. 1.
Edgard Garrido / Reuters
Protesters stand in front of a line of police during a protest against the government of President Enrique Pena Nieto in Mexico City on Sept. 1.
First published September 2 2013, 8:48 AM