 By 2011 only 10 of the original 34 zetas remained fugitives.Most of them have been killed or captured by Mexican Army, Federal Police and the Special Forces Corps.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.