I even confronted
@tarheelbybirth about his handle and he claimed "I heard...but the nickname goes back to the 1700's and references the state's status as a top producer of turpentine, pitch, and tar from pine trees. The workers were also called "rosin heels" but it never caught on for obvious reasons."
The nickname, technically, does not go back to the 1700's. The actual nickname "Tar Heels" goes back to... wait for it... the Civil War. There is reference to the name, or evolution of the term. But, officially, Tar Heels made its debut in and during the Civil War. Now, that really doesn't mean anything negative... unless you want it to be be negative.
Moreover, it has absolutely nothing to do with slavery. At all.
The Civil War was America's crossroads. It defined the nation, in many ways. Just because something- especially language- is an echo of the Civil War doesn't mean it is bad, or wrong, or racist, or oppressive. The
New York Yankees are okay, apparently. Hate to break it to people, but, the Yankees before, during and after the Civil War didn't care much for blacks/slaves, either.
This "Union Soldier Campaign" sounds like a group that is stuck in 1865.