Deputy Attorney General Rod Rosenstein called on lawyers to “accept a personal duty to keep the republic by teaching” the principles of the rule of law, which he said was critical to American democracy.

Upholding “the rule of law is not just about litigation in courtrooms,” Rosenstien said. “It is also about education in classrooms and living rooms.”

He alluded to the “era of fake news,” the notion that media outlets are deliberately engaged in a pattern of misinformation. The...