The 2004 IDD focused on the active involvement of persons with disabilities in the planning of strategies and policies that affect their lives. The motto "Nothing About Us Without Us" relies on this principle of participation, and has been used by Disabled Peoples' Organizations as part of the global movement to achieve full participation and equalization of opportunities for, by and with persons with disabilities. The active involvement of persons with disabilities in the ongoing elaboration of a convention on the rights of persons with disabilities has proved to be an excellent example of how the principle of full participation can be put into practice and how it can contribute to the development of truly inclusive societies, in which all voices are heard and persons with disabilities can help shape a better world for all.
Observance of the Day offered an opportunity to foster changes in attitudes towards persons with disabilities and eliminate barriers to their full participation in all aspects of life.