A member of the SNTE holds a poster during a protest march to commemorate National Teachers Day in Mexico City

 
A member of the SNTE holds a poster during a protest march to commemorate National Teachers Day in Mexico City
A member of the National Union of Education Workers (SNTE) holds a poster during a protest march to commemorate National Teachers Day in Mexico City May 15, 2012. Thousands of teachers from the state of Oaxaca and Mexico City took part to protest against the mandatory evaluation tests for teachers and to demand the removal of their union leader Elba Esther Gordillo, according to local media. The poster reads: " Felipe Calderon (Mexico's President) - I have to be judged for treason against my homeland". REUTERS/Edgard Garrido (MEXICO - Tags: CIVIL UNREST POLITICS EDUCATION)