As a result of the video edited by Andrew Breitbart, Sherrod has suffered "enduring damage to her reputation, as well as emotional distress and financial damages from her loss of employment at USDA," according to the defamation lawsuit.
In the posted video, Sherrod appeared to be talking about discriminating against white farmers; but it turned out her comments were part of a longer speech in which she discussed overcoming her prejudices -- though by the time that was discovered, she had been fired by Agriculture Secretary Tom Vilsack.
Vilsack and President Obama later apologized to Sherrod and offered her another job. She turned it down.
The Los Angeles Times reports:
In response, Breitbart's media company released a statement that said, in part: "The lawsuit ... does not name as co-Defendants President Barack Obama, the USDA and USDA head Tom Vilsack, even though it is they who fired [Sherrod], and who, according to [Sherrod] herself, denied her due process.
"Mr. Breitbart categorically rejects the transparent effort to chill his constitutionally protected free speech and, to reiterate, looks forward to exercising his full and broad discovery rights. Mr. Breitbart is absolutely confident of being fully vindicated."
edit: Whoopsie, forgot to post the Source. Also, this would be a perfect time to use one of ladypolitik's "get it" gifs.