The protests over the 'Ayotzinapa case' and a shot student crash against the Mexican Government in the middle of the electoral campaign. The event strains the political climate, fueling the conflict between the president and the relatives of the normalistas.

The disappearance of the Ayotzin Papa normalistas when they were heading on a bus to a demonstration in the capital, during the six-year term of Enrique Peña Nieto, is one of the saddest and most tangled chapters in recent Mexican history. There is still no absolute certainty who was involved or where the bodies are.