It is alleged that on October 2 , 2013 during a demonstration by so-called " anarchist youth groups " to protest against the Mexican President and to commemorate the 1968 tlatelolco student massacre , undercover GAFEs worked as agent provocateurs to disrupt the march and cause the riot police to crush it
1968 tlatelolco student massacre
Tlatelolco massacre
Cuerpo de Fuerzas Especiales