Mexico City, November 17 (teleSUR-RHC)-- As demonstrators prepared to march from the Angel of Independence on Mexico City’s main avenue Reforma toward the Zocalo, they received the news that the city’s main plaza had been taken over by the presidential guard, and so decided to change course. The Monument of the Revolution would be their new destination.

Protesters took to the streets again in Mexico City and Veracruz on Sunday afternoon to demand justice for Ayotzinapa. With signs and chants, the marchers demanded the return of the 43 disappeared students and punishment for all responsible authorities.

At the Monument of the Revolution, people shouted: “We want him back alive!” as the name of each of the 43 missing students was called out.

A spokesperson for the Ayotzinapa Teacher Training School called for marches to set out from three different points on November 20th, each of which will arrive at the Zocalo that evening.

Demonstrators also denounced the incursion of the police onto the campus of the National Autonomous University of Mexico on Saturday, and that shots were fired at students, resulting in several people wounded.

The same day, highway toll booths were taken over at several points on the highways from Mexico City to Cuernavaca and to Acapulco to demand the safe return of the 43 students.

The responsibility of Enrique Peña Nieto, former Guerrero state governor Angel Aguirre and the PRD party as a whole in the student deaths and disappearances in Iguala was also charged at a people's tribunal held by the teachers of the National Coordinating Committee of Educations Workers (CNTE) held in Mexico City on Saturday.

Upon return to Mexico from his official visits to China and Australia, Peña Nieto condemned the violence by protesters throughout the country. He said the destruction of government buildings and political party offices was unacceptable, warning that if violence continues, police could use force against demonstrators.