Civil war ended a decade ago, but the huge population of young people in the West African state of Sierra Leone must still learn to turn on the tap of aggression if they wish to survive and prosper.
After a few years of relative peace under the rule of a mafia boss, the Colombian city of Medellín, birthplace of the first great narco-trafficking cartel, has seen violent crime soar once again. The culprits are from a new generation of urban youth specializing in protection rackets, drug sales a
