The Nazi camps are places where unspeakable horrors were perpetrated. If you want to have equivalent monuments here, look to the sites of battles or the Andersonville prison, those would be equivalent. Statues of confederate leaders is the equivalent of parts of Germany feeling the need to erect statues to Hitler, Goebells, and Rommel. There is a huge difference between remembering the atrocities and the horror and honoring those who perpetrated that evil.