The Mexican government bristled at a UN committee's findings that disappearances are widespread in the country and the authorities lack precise numbers of missing people.
Authorities in Mexico can now say with "legal certainty" that the 43 students who went missing in September were murdered by hitmen working for a drug gang.
Family members of 43 missing Mexican students said Sunday they would continue pressing for answers over the fate of their sons throughout the holidays.
Dozens of protesting students vandalized an SUV carrying the mayor of the Mexican coastal city of Acapulco, demanding justice over the presumed murder of 43 classmates
A young man who disrupted the Nobel prize ceremony in Oslo by waving a Mexican flag streaked with red said he did it to denounce the alleged killing of students by Mexican authorities.
The parents of 43 missing students began a protest tour of Mexico, rejecting claims their sons were slaughtered in a crime rattling the nation and its leaders.
Mexico's president left on a six-day trip to China and Australia amid angry protests over the suspected massacre of 43 college students by a gang allied with corrupt police.
Gang suspects have confessed to killing 43 missing Mexican students, burning their bodies for 14 hours and tossing their charcoal-like remains in a river, authorities said, in a case causing national revulsion.
Thousands of protesters swarmed Mexico City to demand the safe return of 43 missing students after authorities arrested the main suspects in the disappearance.