Two of my new favorites are from a speech by Jefferson Davis that he gave during the war in Jackson, Mississippi, that I just also posted in the Civil War thread. I like them for two reasons:
First, I think they are both beautifully written, even if they are extremely hateful in content.
Second, I like them because you can feel the raw emotion and ancient history of the animosity between the Yankee and Cavalier ways of life. If you ever had a question about why the southerners felt as strongly as they did, Davis captures all of that emotion perfectly.
Will be offensive to patriots:
Davis Railing Against Yankees