From the Huffington Post:

Shirley Sherrod has filed a lawsuit against Andrew Breitbart over a video released by the conservative personality that lead to her ouster as an official at the USDA.

Breitbart was served on Saturday at the Conservative Political Action Conference (CPAC), according to the New York Times: "In the suit, which was filed in Washington on Friday, Ms. Sherrod says the video has damaged her reputation and prevented her from continuing her work."

The video first gained widespread public attention when it was posted on Breitbart's BigGovernment.com. The two-minute, 38-second clip was widely received as an admission by Sherrod, who is African American, that she had discriminated against a white farmer. Under immediate pressure from the Obama administration, Sherrod resigned from her position as the USDA's director of rural development in Georgia.

Shirley Sherrod Sues Andrew Breitbart Over Video