There was, perhaps, a time when someone might hang the Confederate Battle Flag as a sign of regional pride, or something. Today, I think anyone who does that outside a museum is trying to send a message, a clear one. I cannot think of another reason to display it today. imagery counts. If I see one, I am justified in making an assessment about the individual displaying it.
There used to be a barn just off I-71 north of Cincy that had it on its roof.
I don't see them around here for some reason. I see a LOT of "gay flags" though.