In order to give a very brief overview we must first talk about what you think you know about racism, and what Shirley Sherrod knows about racism. As an African-American Person of Color, her perspective deals with growing up in the south amid immense racial discrimination. Racism is very important to this story because one needs to understand just a little bit about this dreadful disease.
Unless you had a cross burned on your lawn and were denied simple things like using a common bathroom, eating at any restaurant of your choice, being able to go to any hotel that you wanted to, being able to sit downstairs in the movie theater, or drink from a public water fountain of your choice, and go to any school in the United States of America, then you really don't know what racism is all about, and you definitely haven't felt the sting of racism.
The timing couldn't any be better for the person or persons who were trying to destroy the career of Shirley Sherrod, an African-American Person of Color. What was done also caused a huge distraction to President Obama's Wall Street Reform Bill, which he signed into law. There was also the Republican Party's refusal to vote again on the Unemployment Extension bill, which passed, but do to what is called cloture, the Republican Party was able to hold up the final vote and the signing of that bill by this 30 hour rule. http://www.senate.gov/reference/glossary_term/cloture.htm