Here we go again, refighting a long ago war. Face it, neither side will ever concede that the other side is wrong.
Leave it at that and worry about the future. There may come again a time when Americans are fighting eac other, with bullets. Until then, we need to prevent it.
One way would be to concede that there was merit in both positions and that it could have been averted by either side. To prolong the battle will most certainly guarantee a repeat.
You say that like that would be a bad thing.