Writing for the Baltimore Sun, media journalist David Zurawik called for Brian Williams to resign or to be fired by Friday. “If credibility means anything to NBC News, Brian Williams will no longer be managing editor and anchor of the evening newscast by the end of the day Friday,” Zurawik writes.

Wednesday evening, after being caught lying, the Nightly News anchor admitted that for the last 12 years he has repeatedly lied about being shot down in a helicopter over Iraq. As of now Zurawik appears to be the only mainstream media critic calling for Williams to be let go and calling a lie a lie:

If credibility means anything to NBC News, Brian Williams will no longer be managing editor and anchor of the evening newscast by the end of the day Friday. The admission from Williams Wednesday that he lied about being in a Chinook helicopter that was hit by enemy fire during the invasion of Iraq in 2003 is astonishing. And he only admitted the lie after being confronted with it by the military publication, “Stars and Stripes,” which has a well-documented report and timeline showing his shifting version of events over the years.

John Nolte on Twitter @NolteNC