[applause] >> patrick o'donnell's books include "beyond valor," "into the rising sun," he's the founder of the dropzone.org, an oral history web site. for more information on his latest book, visit givemetomorrowbook.com. >> booktv is on twitter. follow us for regular updates on our programming and news on nonfiction books and authors. twitter.com/booktv. >> we're at the national press club's book and author night talking to eugene robinson about his new book, "integration." can you tell me about the book? >> four just seemed to be the way it worked out. it's clear there was, you know, one group was the mainstream, the middle class black measuring. one group was the abandoned, non-middle class black america. and then the other groups were, you know, i did think that the existence of a small but very powerful elite was something new. and so i call that the transcend cant group. and then i needed a category to deal with, with other groups that didn't fit the other categories like immigrants, for example, from the caribbean and africa and also biracial americans. and i thought that they wo