We all have a moral responsibility to help others with a disability to participate in society, and also a legal one not to discriminate against people with a disability.
Under the Disability Discrimination Act in Australia it is illegal to treat someone a person with a disability less favourably than a person without the disability in the same or similar circumstances. For example, it would be direct disability discrimination for a blind person to be refused entry to a restaurant because they have a guide dog. It may be considered indirect discrimination if they only way to enter a public building is by a set of stairs because people who require wheelchair access would be unable to enter the building. Particular areas of public life covered by the Act concern employment, education, accommodation, getting or using services and access to public places. To read more on this visit the Human Rights site.