Photo: Media groups push back after fake news defined US elections

ADVANCE FOR USE SUNDAY, MARCH 12, 2017 AND THEREAFTER-FILE - In this Sunday, Dec. 4, 2016 file photo, Edgar Maddison Welch, 28 of Salisbury, N.C., surrenders to police in Washington. Welch, who said he was investigating a conspiracy theory about Hillary Clinton running a child sex ring out of a pizza place, fired an assault rifle inside the restaurant on Sunday injuring no one, police and news reports said. Fake news, social media bots, a post-fact world. One of the great lessons of the 2016 U.S. presidential campaign is that people could not _ or would not _ distinguish between actual news stories and fabrications. (Sathi Soma via AP)