A new study in Brazil has found that the murder rate for young people has soared in the last 30 years. Today, about four of every 10 people murdered in the country are Brazilian youth.

Julio Waiselfiz, the author of the report, says the homicide rates have risen mostly in cities that have seen an increase in immigration due to economic development. 

Al Jazeera's Gabriel Elizondo reports from Rio de Janeiro.

Source: Al Jazeera