Almost 1,000 school pupils have been caught with weapons including guns and knives in the past three years
The final match of the Brazilian football season ended on Sunday with three people left seriously injured after a violent fight broke out in the stands.
The gunman who died in a gun battle with police after killing 12 people and injuring eight others in the Washington Navy Yard yesterday has been identified as former US Navy serviceman Aaron Alexis.
Nearly 300 people were arrested in Paris after far-right groups clashed with riot police at a protest against gay marriage.
In slums where killings, rape, kidnappings and other criminal violence are commonplace, say researchers, lives and livelihoods are hampered by a force that is tough to measure: Fear.