Life and death on the lost streets of Chicago
7 September 2016 Last updated at 01:33 BST
WARNING: The video contains very strong language.
Killings in Chicago have hit a 20-year high as the grim toll for homicides in the city passed 500.
A deadly summer of violence ended with multiple murders over the Labor Day holiday weekend.
Most of the victims - and the killers - are young black men. The BBC's Ian Pannell explores a world where gangs and guns rule.
Camera/director: Darren Conway; video editor: David Botti; assistant producer Gabriella O'Donnell; aerial photography Phil Jorden; executive producers Jacky Martens and Ben Bevington