The historic record is clear: The Robert E. Lee, Jefferson Davis, and P.G.T. Beauregard statues were not erected just to honor these men, but as part of the movement which became known as The Cult of the Lost Cause. This “cult” had one goal—through monuments and through other means—to rewrite history to hide the truth, which is that the Confederacy was on the wrong side of humanity. First erected over 166 years after the founding of our city and 19 years after the end of the Civil War, the monuments that we took down were meant to rebrand the history of our city and the ideals of a defeated Confederacy. It is self-evident that these men did not fight for the United States of America. They fought against it. They may have been warriors, but in this cause they were not patriots. These statues are not just stone and metal. They are not just innocent remembrances of a benign history. These monuments purposefully celebrate a fictional, sanitized Confederacy, ignoring the death, ignoring the enslavement and the terror that it actually stood for.
Source : http://www.huffingtonpost.com/entry/mitch-landrieu-speech-confederate-monuments_us_59243ebce4b03b485cb5122b