Scot Danforth, author of the new biography "An Independent Man," talks about the life of Ed Roberts, who founded the Independent Living Movement. In the revolutionary 1960s, Roberts and his fellow Berkeley activists pioneered the disability rights fight. He later led change in Sacramento as California's Director of Rehabilitation, advocating for state legislation years before the federal Americans with Disabilities Act. But, as current threats show, hard-won gains like these can be taken away.