U.S.WorldBusinessArtsLifestyleOpinionAudioGamesCookingWirecutterThe AthleticYou have a preview view of this article while we are checking your access. When we have confirmed access, the full article content will load.Oren Etzioni worries A.I.-generated fakes could overwhelm upcoming elections.Credit...Kyle Johnson for The New York TimesOren Etzioni was once an optimist about artificial intelligence. Now, his nonprofit, TrueMedia.org, is offering tools for fighting A.I.-manipulated content.Oren E...