There are more than 54 million Americans with disabilities. While their status has improved markedly since the Disabilities Rights Movement began in the late 1960s and early '70s, those with disabilities are still only half as likely as other Americans to be employed and more than twice as likely to live in poverty. We speak with one of the nation's most ardent advocates for disability rights and about his own experience raising a son with Down syndrome. Guests: Dr. Michael Berube