Protesters throw molotov cocktails and stones at riot police in the town of San Salvador Atenco, Mexico, outside of Mexico City. (Marco Ugarte / AP)
An injured policeman is carried away by fellow officers during clashes with protesters. (Marco Ugarte / AP)
Policemen charge protesters in San Salvador Atenco, Mexico, trying to reestablish the order in the city. (Alfredo Estrella / AFP/Getty Images)
Another injured policeman is helped in San Salvador Atenco. (Alfredo Estrella / AFP/Getty Images)
Riot police take cover after tear gas cannisters were thrown back at them in the town of San Salvador Atenco, Mexico. (Marco Ugarte / AP)
A cloud of gas blows towards riot police as they approach protesters. (Marco Ugarte / AP)
Policemen arrest an inhabitant of San Salvador Atenco. (Alfredo Estrella / AFP/Getty Images)
Policemen arrest an injured inhabitant of San Salvador Atenco. (Alfredo Estrella / AFP/Getty Images)
