David Duke, born on July 1, 1950, is an American white nationalist and former grand wizard of the Ku Klux Klan who has a history of running for various political offices, including U.S. Senate and president. He advocates for white separatism and racial segregation, often framing his views as 'racial realism'. Throughout his career, Duke has faced significant controversies and legal challenges due to his extremist beliefs and affiliations.