Germans don't use Nazi swastika flags to honor their dead from World War II. The same logic applies to the Confederacy, even if the Nazis' sins were worse than those of Jefferson Davis and company.
The public can and should try to shame the Confederacy fan club into scrapping the emblem of a wicked purpose and leaving it to be displayed in museums and history books.
“The upper South, like the lower, went to war to defend the freedom of white men to own slaves and to take them into the territories as they saw fit.” - the Civil War. That is how history happened.
So, we the people of the United States of America should discourage the misguided from using an offensive flag to pretend otherwise. Start here for a change.