on twitter, former us president barack 0bama said he was fortunate to work with her, and paid tributeght for civil rights. joining us now is marcie roth — ceo of the world institute on disability, and a long—time associate ofjudy heumann. the thank you very much forjoining us here on bbc news. your reaction first to the sad passing ofjudy. wow, thank you very much for having me and, frankly, like many, many people around the world, i am in shock. i was in a meeting withjudy just a few days ago, had the opportunity to say goodbye to her just before she died yesterday and i still can't believe it. just can't believe that.— still can't believe it. just can't believe that. for many people outside of _ believe that. for many people outside of the _ believe that. for many people outside of the united - believe that. for many people outside of the united states, | believe that. for many people - outside of the united states, they will not be familiar with the significance of the work that she did. i have tried to paint a picture, obviously, and introducing you come i wonder what more you cou