The Trump/Sweden terrorist attack stories showed that Fake News is not just with the "lamestream" media. First, Trump heard a story on Fox News that there was a terrorist attack and said in a tweet it was Sweden. Attempting to cover, they cover a reporter who been beaten up by immigrants in Sweden. Not the same thing.
So then O'Reilly comes out with an interview with a guest booked to support Trump's error that turns out to be not who he claimed to be. O'Reilly said of his guest: "Mr. Bildt does consulting work on terrorism, that is true, but we should have clarified that he had no direct role with the Swedish government...a more relevant guest should have been used on the anti-immigrant side.”
When a reporter wrongly said the bust of King was removed from the White House, he apologized. In response to this apology, KellyAnn Conway dismissed the clarification, noting the story is "already out there".  Will we see O'Reilly's comment on Breitbart? Yes, it was buried with only 5 comments.