Ok I am going to throw in my .02cents worth.
I don't beleive any of these Confederate stutes/monuments were ever erected because of their ideals or opinions. Rather they were erected as a testament to their leadership. I acknowledge slavery was a huge factor in the civil war. I also acknowledge it was an abomination. I also say keep in mind the slaves were first enslaved in Africa presumably by people of other tribes (for lack of better words). I have to beleive that slaves were also sold to other countries. Furthermore I think that there may have been some Native American slave or other people of color (Idk but it's possible). I think a look at each monument/statue should be done individually, and decide if it should be removed. In effort to be brief, I will jump to Gen Robert E Lee's statue. He was a great leader and was instrumental in the surrender that finally ended the war. He did it with grace, dignity and honor. And afterward he wanted to help heal and rebuild our nation. Those are traits of a leader that should be recognized. Also realize that during the civil war the union required he pay property taxes in person. But, when he sent his wife to pay the taxes the Government wouldn't accept her money and so the Government took their land. The union decided it was a great place to bury union soldiers. Land that we now know as Arlington National Cemetery. If we are to remove all these monuments in a sort of cleansing and erasing of history, where does it stop? Those that served on both sides were Americans, this is OUR history and we are all in it together. IF we want to point boney fingers at OUR past lets look deeper at some atrocities that were committed under the righteous leadership of the union Generals. Look around at all the parks, cities, streets etc that are named after people who had plenty of faults but are remembered as great leaders. Surely we can't allow it to all be destroyed, it has to stop somewhere. How is it that just recently so many have become offended by these monuments they hardly noticed before? Why is it those who push the agenda of open acceptance for all (refrencing border issues/LGBT etc) have no acceptance of those who don't agree with them? They can't even accept that this is part of their history too.
Edit- another point to consider the wealthy plantation slave owners of the time in large part identified as being democrats.
I see this mentioned often. Why is this relevant? It's almost as if the belief is, because Africans kept slaves, then it is ok for other people to keep slaves. Have you ever heard anyone say. Slavery is a bad thing in the United States, but Africa? ... oh yeah that's perfectly fine.
As far as Lee being instrumental in ending the war, I'd agree, but not in the way you'd think. Lee was a brilliant tactician, who instrumental in prolonging the war by years.
Both sides of the Civil War were Americans; one side loyal, the other side traitor to their nation. I do not agree with disturbing the graves of Confederate soldiers, that's beyond the pale. They died honorable deaths for the wrong cause, so graveyard memorials should remain untouched.
Now when it comes to random monuments that dot the landscape, don't fool yourself. The vast majority were erected in the 20th Century, as a white washing of the "noble" cause of the Confederacy. You will find that most of these were put up after 1915. 1915 being a noteworthy date, as that was the year that the movie "Birth of a Nation" was released. 1915 also coincides with the 2nd incarnation of the Ku Klux Klan. Take the monument in Charlottesville. It was put erected in 1924, but was commissioned in 1917. Do you not find the convenient that the rebirth of the Klan, the release of Birth of a Nation, and the commissioning of the statue all occurred within a very small timeframe?