It is a BS waste of time.
To lazs, I've never heard of an attempt to outlaw the flying of the Confederate flag, but if there is one I oppose it.
Removing it from state flags where it was coincidentially added during the Civil Rights struggles of the '50s and '60s is not the same thing however. It was added with the intention of making a clear statement of the position of those state governments. It should not be on those flags because of why and when it was added. If it had been added for memorial reasons in, say, the 1870s I'd have a different opinion.
That said, in no case should anybody be stopped from flying the Confederate flag as individuals or as private groups. No restricts as to where it can be flown should be allowed either. They should be allowed to march down main street with it if they like, so long as they obey traffic laws.