As a Mets fan living in the Atlanta area, I get tired of hearing about the Braves on sports radio. But what really sends me toward the edge is the idiotic Tomahawk Chop. In a region with questionable race relations history (KKK, segregation, and the like) you can almost hear the average redneck say 'well, its getting harder and harder to keep the n***ers in their place.... at least we can go watch the Braves.'
And I'm a Giants fan, so there's that whole Daniel Snyder attitude about the Redskins mascot name.
So yeah, I'm not rational about this, but here's a piece talking about why some Native Americans find some mascots racist. Hope it is interesting to you.
Rant over, go whoever plays the Braves.