Despite repeated warnings over the past two decades, federal law enforcement officials in the United States have ignored the threat of violence from far-right extremists. Now, they have no idea how to stop it. Guest: Janet Reitman, a contributing writer for The New York Times Magazine who is working on a book about the rise of the far right in post-9/11 America. For more information on today’s episode, visit nytimes.com/thedaily.