CrimethInc., also known as CWC ("CrimethInc. Ex-Workers Collective" or "CrimethInc Ex-Workers Ex-Collective"), is a decentralized anarchist collective of autonomous cells.
CrimethInc. emerged in the mid-1990s, initially as the hardcore zine Inside Front, and began operating as a collective in 1996. It has since published widely read articles and zines for the anarchist movement and distributed posters and books of its own publication.

official site: http://www.crimethinc.com/

http://en.wikipedia.org/wiki/CrimethInc.