Gustavo Petro
In this photo taken Aug. 2, 2012, Bogota’s Mayor Gustavo Petro gestures during a press conference in Bogota, Colombia. Petro,52, who underwent an emergency surgery due to a hematoma in his head in June, was hospitalized again on Thursday, Aug. 9, but his condition is stable, said a spokesman of Bogota’s mayor’s office. (AP Photo/Fernando Vergara)