The Southern Poverty Law Center also thinks Duke is a Neo-Nazi. David Duke is the most recognizable figure of the American radical right, a neo-Nazi, longtime Klan leader and now international spokesman for Holocaust denial David Duke is a former Grand Wizard of the Terrorist KKK. . He twice ran for President, has run for Governor, Senator, and has sat on the Louisiana state legislator. He has run as both a Republican and a Democrat. He is very, very hard-core conservative.