In light of the murder of 9 church members in South Carolina, perhaps you can focus on the real problem which isn't a flag, and address the present crisis in mental health treatment and identification of potential problems. Evidently the therapist treating the alleged perpetrator, and several friends and relatives, knew he had extremist views, yet he was not on a watch list. This is not going to make a liberal happy, because they have to consider mental illness (and our not treating it nationally) as a reason to remove some of our civil rights to own and carry a firearm.
I think you would find that outlawing the confederate flag, or limiting firearms as any of the last few attempts would have done, would not have stopped this kid from shooting church members. But a good guy with a gun, in the church, could have stopped him as he was reloading. And if we had some effective mental health laws in place, it might have been harder for him to get a gun in the first place.
The problem is not a flag. It's that we are not spending much on taking care of the mentally challenged, not identifying them, and not assisting appropriately with housing or care.
