A racial slur shouted during the awards show has raised questions about how Tourette’s outbursts should be understood

Controversy has erupted over the Baftas after the BBC initially failed to edit out a racial slur shouted by John Davidson, who has Tourette syndrome.

Here we explore what vocal tics are, and how they should be understood.

One of the films up for awards was I Swear – a movie inspired by the real-life story of Tourette’s campaigner John Davidson, who was present at the event on Sunday.

Davidson shouted several times during the ceremony. In once case, he used the N-word while the actors Delroy Lindo and Michael B Jordan were presenting a prize on stage.