What is the theme in Confederates in the Attic: Dispatches from the Unfinished Civil War by Tony Horwitz?

Many of the southern people interviewed by Horwitz who maintained a connection to the Civil War saw the struggle as a symbol of personal pride that connected them to others in their society. Mike Hawkins, for example, who was a blue-collar worker with family and financial problems was proud to belong to the Sons of Civil War Veterans, where he socialized with professionals and people of other backgrounds. His family connection to the Civil War gave him a sense of pride.