We've had this conversation before. Here's the Google map of Red Clay: Map of greater Red Clay
On the other hand, Vicksburg, Mississippi, didn't celebrate the Fourth of July until World War II. [Source: Time Magazine article from 1945]
As I've mentioned before on these threads, my Georgia inlaws despised Yankees long after the war in Georgia. I wonder if Yankee thievery like the following admission by Union Captain George Whitfield Pepper might have played a role [Source, Personal Recollections of Sherman's Campaigns: In Georgia and the Carolinas, by George Whitfield Pepper, published by Hugh Dunne of Zanesville, Ohio, in 1866]:
There are hundreds of these mounted men with the column and they go everywhere. Some of them are loaded down with silverware, gold coin, and other valuables. I hazard nothing in saying that three-fifths (in value) of the personal property of the country we passed through was taken.
But there were also many of these type of criminals also operating in the wake of Confederate forces. I've read much of similar Confederate atrocities associated with the passage of Wheeler's cavalry. But the problem with the Confederate civil oppression that I've been studying is that it was done under what passed for normal peaceful community life and was unrelated to military movements. For instance, the military requirements of the CSA did not need the existence of Captain Brown's systematic extortion of Unionists in the Cleveland Tennessee region.