Inside The World’s Five Biggest Crime Organizations

Published September 18, 2012
Updated July 20, 2017

The World’s Biggest Crime Organizations: Yamaguchi-gumi

The largest criminal organization in Japan and one of the biggest crime organizations in the world, the Yamaguchi-gumi boasts over 55,000 active members. It was founded before World War II and can be traced back to the labor union of dockworkers.

The organization amasses billions of dollars a year through various criminal activity including extortion, drug dealing, real estate, arms dealing, gambling, Internet porn and stock market manipulation. One of the members even assassinated the mayor of Nagasaki because he damaged his car in 2007.

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