Jack Nicas, “How YouTube Drives People to the Internet’s Darkest Corners,” Wall Street Journal, Feb. 7, 2018; Paul Lewis, “ ‘Fiction Is Outperforming Reality’: How YouTube’s Algorithm Dis-torts Truth,” Guardian, Feb. 2, 2018; Jon Swaine, “Twitter Admits Far More Russian Bots Posted on Election Than It Had Disclosed,” Guardian, Jan. 19, 2018; Philip N. Howard et al., “Social Media, News, and Political Information During the US Election: Was Polarizing Content Concentrated in Swing States?” Computational Propaganda Research Project, Sept. 28, 2017.
