Anger has boiled over in the western Mexican state of Guerrero over the government’s handling of the abduction and apparent massacre of 43 students.<br /><br />Demonstrators set fire to the state’s congress and vehicles were torched.<br /><br />The trainee teachers disappeared in the nearby town of Iguala more than six weeks ago after a confrontation with police.<br /><br />At one point the state’s education department was broken into.<br /><br />The disappearance of the students and the links it has revealed between local government and a drugs gang has triggered unrest for weeks.<br /><br />Many believe the connections go far beyond regional level.<br /><br />In the capital, protesters pointed a finger at national government. Some refuse to believe that human remains found in mass graves are those of the students and accuse the government of failing to give a full explanation of what has happened.<br /><br />The case has plunged President Enrique Oena Nieto’s government into its biggest crisis.<br /><br />Investigators have said that local police officers have confessed to seizing the students who had been holding a protest, and later handing them over the a gang calling itself Guerreros Unidos (United Warriors). The gang is said to have killed them and incinerated their bodies.