Childhood provides a crucial window for changing cultural perceptions of disability. It is obviously beneficial to children who are disabled or have a disabled family member to be in an atmosphere where their differences are understood as a valued form of diversity, rather than a source of discomfort or fear.
Do what you can to learn more about disability-related issues and help start some discourse about disability equality, and then share that with other people. Disability is not just physical. There are plenty of hidden disabilities related to learning or emotion as well. Help stop stigmas and stereotypes.