Federal policemen walk after tear gas was fired to evict striking members of the teachers' union CNTE from Zocalo Square in downtown Mexico City September 13, 2013. Violence broke out in the historic ... more 
Federal policemen walk after tear gas was fired to evict striking members of the teachers' union CNTE from Zocalo Square in downtown Mexico City September 13, 2013. Violence broke out in the historic heart of Mexico City on Friday as scores of riot police forcibly evicted thousands of striking teachers occupying the capital's iconic Zocalo just days before Independence Day celebrations in the capital. Firing tear gas at angry protesters, riot police braced for violence as they swept into downtown Mexico City to re-take control of the Zocalo and its surrounding streets, the culmination of weeks of protests that had seen teachers set up a massive protest camp in the world's second largest square. REUTERS/Edgard Garrido (MEXICO - Tags: CIVIL UNREST POLITICS EDUCATION BUSINESS EMPLOYMENT) less 
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Reuters | Photo By EDGARD GARRIDO / REUTERS
Fri, Sep 13, 2013 8:58 PM EDT