Duke and people like him don't have a cause - they're just frightened, spiteful little people, who are thankfully dying off as our society matures. While I will admit that Trump has said some pretty stupid things, especially regarding illegal immigration, I would point out that to my knowledge, nobody ever accused Trump of racism until he became a republican candidate for president. Curbing illegal immigration is a major issue in this country, and he did himself no favors in laying out his case for building a wall, but I believe too many people are confusing racism with nationalism in their regard for Trump.