After a tweet by Gary Lineker triggered a BBC crisis, The Media Show asks whether the concept of impartiality is still relevant to audiences. What does the word even mean? Are BBC guidelines compatible with wider trends in media of opinionated presenters and loud polemic? And might the fallout from Lineker's tweet even hasten the end of the licence fee? Ros Atkins and Katie Razzall debate with an expert panel.Producers: Helen Fitzhenry and Dan HardoonPresenters: Ros Atkins and Katie Razzall