OpinionViewpointsWhy Do Politicians Lie?CopyFacebookXTruthGettrLinkedInTelegramEmailSaveHigh school students demonstrate outside the United States District Court in Newark, N.J. on May 1, 2015. Kena Betancur/Getty ImagesBy Roger Koopman2/7/2022Updated: 2/7/2022PrintCommentaryWe’ve all heard the joke: “How do you know when a politician is lying?”