I understand ban on photography put because of serious security reasons (like in some military objects, although... in times of spy satellites...) or because of someones' privacy. But I can't understand the ban put inside the White House of the Confederacy which is open to the public and displays fully furnished old residential and office rooms.
I took a few pictures in the new part of the Museum of the Confederacy like this one of surgical kit used during the Civil War (1861-1865). There was no ban on photography there :-).
Unique Suggestions: Where there is no posted sign prohibiting photography (as there was in the White House of the Confederacy) I assume it is okay to take photos.
If you like... don't look at the ban and take pictures :-). But better do not use the pictures for any commercial purposes.
Fun Alternatives: What about founding Association for Free Photography or something this lines? He?