Benkler et al., “Study: Breitbart-Led Right-Wing Media Ecosystem Altered Broader Media Agenda”; Alexandra Topping, “‘Sweden, Who Would Believe This?’ Trump Cites Non-existent Terror Attack,” Guardian, Feb. 19, 2017; Samantha Schmidt and Lindsey Bever, “Kellyanne Conway Cites ‘Bowling Green Massacre’ That Never Happened to Defend Travel Ban,” Washington Post, Feb. 3, 2017.
