Rupert Murdoch's Fox News was Donald Trump's favoured TV channel - not least because Fox anchors shamelessly fawned over him, both during his time as a Republican candidate, then during his Presidency. But did the line between journalism and propaganda go too far? And what role did Fox have to play in the insurrection of January 6 2021, when a mob attacked the Capitol in Washington D.C. claiming that the election had been stolen?