n.someone who commits crimes for profit (especially one who obtains money by fraud or extortion)

v.carry on illegal business activities involving crime

Organized crime in Nigeria
Racketeers
Information, Institutions, and Extortion in Japan and the United States: Making Sense of Sokaiya Racketeers
Self-mutilation. Plastic spherules in penile skin in yakuza, Japan's racketeers.
A Generation of Racketeers? Eliminating Civil RICO Liability for Copyright Infringement
SHANGHAI IMPERIALISTS VERSUS RICKSHAW RACKETEERS - THE DEFEAT OF THE 1934 RICKSHAW REFORMS
Racketeers, Congress, and the Courts: An Analysis of RICO
The racketeers of illusion
How to identify the Yakuza, Japanese racketeers--their sociology, criminology and physical characteristics
First Amendment Racketeers