History professors discussed the origins of the Civil War and a variety of other issues. They spoke about. changing historical interpretations up to the present day and political issues which hinge on meanings taken from the era. These remarks were given in the context of a federal effort to include slavery as part of the presentations at Civil War battle sites. They also responded to questions from the audience.
http://www.c-span.org/video/?157012-1/dilemma-interpretation