That’s the name of a new Wall Street Journal documentary:
The Kowloon Walled City in Hong Kong was once the densest place on earth, a virtually lawless labyrinth of crime, grime, commerce and hope. A Wall Street Journal documentary tracks its colorful legacy 20 years after its demolition.
The link above leads to the doc on WSJ.com, and there’s also a YouTube version.
Very much worth a watch.