Well, this has been a really interesting read about all the ideological viewpoints, none of which I'm going to cover here. My argument, which I posted several days ago, is that, as far as businesses are concerned, they can do what they want. I mean, in hindsight (which is always 20/20) results like this should have been expected once the ANV battle flag got tied to it. And, in the end, you can still buy it if you just do a Google search.
As far as state grounds and monuments and cemeteries, well, there's nothing much that we can do there either. In all honesty, some of these battles have been going on for a long time and have gained publicity boosts because of the news, like the one to remove the N.B. Forrest statue from some Tennessee park and return his body to the cemetery he was buried in (his body was moved in the early 1900's and placed under the monument. I don't think he should have been moved in the first place), of which there's an interesting Vice doc from a couple years ago. These measures, for the most part, will get passed through because they're popular, and what politician is going to give up a portion of their constituency and jeopardize reelection chances because of a flag?
In the end, I don't think this will be much of an issue for much longer. Let the fervor die and maybe they'll start to pop back up by monuments, memorials, graves, etc. Hell, go buy your own and plant em yourself. I can easily see supporters of the flag putting them back up or standing watch over them to protect them from vandalism. Go file suits over it, go protest, push legislation. And if you're opposed to them, protest them, file suits, push legislation, hell, sneak out, take em down, burn em. Try and keep it as legal as you can, however.