TIXTLA, MEXICO - OCTOBER 13: A masked man member of the community police force stands guard outside the Raul Isidro Burgos de Ayotzinapa Teachers College on October 13, 2014 in Tixtla , Mexico. The community police is securing the area around the school and is also helping relatives in the search for the 43 students that went missing after a confrontation with local police that left 6 dead last september 26. (Photo by Miguel Tovar/LatinContent via Getty Images)