There have been clashes between demonstrators and police outside military barracks in the Mexican city of Iguala where 43 students disappeared in September last year.<br /><br /> The protesters accuse the military of involvement in the fate of the trainee teachers who are presumed dead.<br /><br /> The wife of a Mexican politician suspected of helping to plot their apparent massacre is to be put on trial.<br /><br /> The atrocity has sent shockwaves through Mexico and President Enrique Pena Nieto faces his deepest crisis over the government’s handling of the investigation.
