First, Duke was the head of a KKK organization for a short time. There were hundreds of separate chapters of the KKK. That was over 30 years ago. Second, Duke quit that position, and the KKK organization he was a part of never harmed a hair on the head of anyone. Third, if Duke decided to be a Democrat he would've easily become a senator or congressman just like Senator Robert (KKK) Byrd AKA Hillary Clinton's mentor who was a lieutenant of a notorious KKK off shoot that actually hanged blacks.
All Dr. Duke has done to warrant such hate from the Anti-White left is being a staunch advocate of Whites. The biggest baddest, most evil thing a White person can do is to stand up for, and love his own people.