Making Sense of the Facebook Menace

Every day, a Twitter account run by Kevin Roose, a technology reporter for The New York Times, posts a list of the top 10 sources of the highest-performing links on Facebook in the United States.

On one Friday in November, the list began with CNN. The eighth and ninth entries were NPR. But the seven others were from Donald J. Trump, evangelical Trump supporter Franklin Graham, and conspiracy theorist Dan Bongino. Indeed, Bongino, once largely unknown outside the world of right-wing Facebook groups and obscure video sites, owned four of...