Cory Doctorow, the European Affairs Coordinator from the Electronic Frontier Foundation (US) has written an excellent statement outlining the dangers of Digital Rights Management. The statement is signed by several other digital rights organisations, including European Digital Rights and was presented to the ITU-R Working Party 6M Report on Content Protection in March 2005.

Digital Rights Management: a failure in the developed world, a danger to the developing world
http://www.eff.org/IP/DRM/itu_drm.php