Daryl Johnson is one of the foremost experts on domestic extremist groups in the US. Beginning his career as a civilian in the US Army, Johnson has held a number of government positions, most recently as senior analyst at the Department of Homeland Security. He is currently the founder of DT Analytics, a private consulting firm for law enforcement. He is also regularly cited, featured, or quoted in media covering domestic extremist groups in the US, including the New York Times, Washington Post, Wall Street Journal, Newsweek, National Public Radio, MSNBC, CNN, and NBC Nightly News, among many others. He is the author of Hateland: A Long, Hard Look at America's Extremist Heart (Prometheus Books, 2019) and Right-Wing Resurgence: How a Domestic Terrorism Threat Is Being Ignored (Rowman & Littlefield, 2012). Johnson is also a freelance writer for various media and civil rights organizations. In 2012, he testified before the Senate Judiciary Committee on hate crimes and the threat of domestic extremism.