Protests demanding justice in the case of the 43 missing Ayotzinapa Teachers Training College students were held throughout Mexico today, coinciding with the beginning of President Enrique Peña Nieto's third year in office. Many demonstrators are demanding the President's resignation, given his perceived failure to adequately resolve public security concerns and tackle organized crime. A huge march was slated for Monday afternoon in the Mexican capital. Clayton Conn reports from Mexico City. teleSUR