Parents of the missing students of Ayotzinapa held a demonstration today outside the military barracks of the 27th Batallion in the muncipality of Iguala in the state of Guerrero. A contingent of military police, equipped with full riot gear, repelled the parents, which infuriated the students who accompanied them. The students began to throw rocks and bottles at the police, who also threw rocks at the protesters. The confrontation lasted almost one hour and left several demonstrators injured. teleSUR.