AP photographer Rodrigo Abd covers World Cup protest

Peru-based AP photographer Rodrigo Abd, places his gas mask back on as violence resumes while being treated by a friendly bystander doctor, left, after he suffered injuries during an Anti-World Cup protest on the opening day of the World Cup in Sao Paulo, Brazil, Thursday, June 12, 2014. (AP Photo/Dario Lopez-Mills)

Peru-based AP photographer Rodrigo Abd, places his gas mask on as violence resumes after he suffered injuries during an Anti-World Cup protest on the opening day of the World Cup in Sao Paulo, Brazil, Thursday, June 12, 2014. (AP Photo/Dario Lopez-Mills)

Peru-based AP photographer Rodrigo Abd, places his gas mask back on as violence resumes while being treated by a friendly bystander doctor, left, after he suffered injuries during an Anti-World Cup protest on the opening day of the World Cup in Sao Paulo, Brazil, Thursday, June 12, 2014. (AP Photo/Dario Lopez-Mills)