Disability rights advocacy influences legislation by raising awareness about _systemic barriers_ faced by individuals with disabilities. Advocacy groups mobilize to promote legal reforms that ensure equal access and opportunities, such as the Americans with Disabilities Act (ADA). These efforts emphasize the importance of inclusivity and equitable treatment in various aspects of society, from education to employment. By educating lawmakers and the public on the challenges faced by disabled individuals, advocacy promotes comprehensive policies that address their needs, thus transforming societal attitudes towards disability rights.