Massive and violent demonstrations erupt in Mexico City's Zocalo Thursday night over the president's handling of the apparent massacre of 43 student teachers.<br/> <br />Marches through the city began peacefully but ended with protesters lobbing Molotov cocktails at police in riot gear.<br/> <br />The country has been plagued by protests since the 43 students were kidnapped by corrupt police from the southwestern city of Iguala.<br/> <br />The police were working with a local drug gang who are suspected of killing and burning the students.<br/> <br />The government is still investigating the incident, but the president's lack of action on the case has enflamed the public's anger.
