” A man convinced against his will is of the same opinion still”
The idea that bureaucrats in Washington D.C. should dictate your life is repugnant to many.
The bureaucrats in Washington are not making you personally drop the rebel flag or cease honoring your rebel ancestors. You are free to continue doing so if that's your choice. They are saying that the government itself should not be publicly honoring those who waged war against it. What is so hard to understand about that?