A street performer demonstrates outside the headquarters of the Federal District's Government, at Zocalo Square, in Mexico City, capital of Mexico, on Oct. 4, 2012. Dozens of street vendors and performers protest against the refusal to allow them to work in the tourist corridor of Madero Street at the Historic Center. (Xinhua/Pedro Mera)

Street performers demonstrate outside the headquarters of the Federal District's Government, at Zocalo Square, in Mexico City, capital of Mexico, on Oct. 4, 2012. Dozens of street vendors and performers protest against the refusal to allow them to work in the tourist corridor of Madero Street at the Historic Center. (Xinhua/Pedro Mera)

Street vendors and performers demonstrate outside the headquarters of the Federal District's Government, at Zocalo Square, in Mexico City, capital of Mexico, on Oct. 4, 2012. Dozens of street vendors and performers protest against the refusal to allow them to work in the tourist corridor of Madero Street at the Historic Center. (Xinhua/Pedro Mera)