Parents and relatives of school children try to charge through a police line outside the Tasso da Silveira school where a gunman opened fire on children in the Realengo neighborhood of Rio de Janeiro April 7, 2011. [Photo/Agencies]
Police arrive at the Tasso da Silveira school where a gunman opened fire on children in the Realengo neighborhood of Rio de Janeiro April 7, 2011. [Photo/Agencies]
