The Sun claimed Jeremy Corbyn danced (don’t bother clicking; the story was removed for legal reasons) down Whitehall on Remembrance Sunday. What actually happened is that a photographer edited a picture to show Corbyn apparently waving his hand as though he were dancing when he was really walking, talking, and gesturing with a veteran (a Desert Rat).
So what The Sun really did was airbrush out a veteran in order to pursue an ongoing vendetta against Corbyn. Now pursuing a vendetta against Corbyn is fair enough – if you restrict yourself to his policies and politically relevant stories. But making up lies and you lose your status as a newspaper and become a “liepaper”.
There are those who argue that it was the photographer that invented the story, and that The Sun was taken in by the lie. Which is why the first rule of journalism is to make sure you have at least two sources, and check the sources. Again, not following this basic rule disqualifies The Sun as a newspaper and makes it a liepaper.