The remaining provisions of the Disability Discrimination Act 2005 came into force on 4 December 2006. Included among the changes is the disability equality duty. This requires public authorities to promote equality of opportunity for disabled people, eliminate unlawful disability discrimination and disability-related harassment, promote positive attitudes towards disabled people, and encourage disabled people to participate in public life. All public sector organisations are required to devise and publish a disability equality scheme setting out how they intend to achieve these goals.