How it came to violence
Ever since the new year began Mexican society has been at an unrest; however, until a certain point all the frustrated citizens did was shout abuse at policemen. The situation escalated on January 7th, when a group of young people were angered by the detention of 12 co-marchers. The youth began to throw stones at the police, who reacted by charging into the exasperated crowd. Tear gas was used and many more were detained.