Apparently the issue is the distaste for the group that's protesting. It's unfortunate but demonstrations by those we are not in agreement is a consequence of free speech.
That being said, Robert E Lee was a native son of Virginia, graduate of West Point, brilliant field general and president of Washington and Lee university.  He is an important part of history and his statue should remain. The property were Arlington National Cemetery sits once belonged to Lee and was confiscated by the U.S. government. Should we relocate the cemetery so as not to be reminded it belonged to a Confederate general?