Chelsea midfielder Frank Lampard is among Premier League stars spearheading a campaign to rid English football of anti-Semitism.
Lampard has joined Tottenham's Ledley King and Arsenal's Kieran Gibbs in a film, written and produced by David and Ivor Baddiel, which tackles anti-Jewish abuse.
The Kick It Out campaign is behind the new initiative which targets chants of 'Yiddo' by Tottenham fans, many of whom are Jewish themselves.
Lampard, in the video message being sent out to clubs, said: "For some reason some fans still shout the Y-word. Some might think it's just a bit of a laugh, but racist chanting is against the law. It's against the law to call someone the Y-word on the street."
Match of the Day presenter Gary Lineker, who used to play for Tottenham, also appears in the one-minute film, which has the backing of the FA and the PFA and features a clip of fans hissing: 'Spurs are on their way to Auschwitz, Hitler's going to gas them again'.
David Baddiel, the television comedian and novelist whose mother Sarah was a refugee from Nazi Germany, said: "The film is not intended to censor football fans. It's simply to raise awareness that the Y-word is - and has been for many, many years - a race hate word.
"It's our belief that some football fans may not even realise this, and the film is designed therefore to inform and raise debate."
Tottenham executive director, Donna Cullen, said: "It is unthinkable and wholly unacceptable that, in this day and age, supporters are subjected to anti-Semitic abuse such as hissing to imitate the gas chambers used during the Holocaust in the Second World War.
"We are committed to eliminating all forms of racism and we shall support efforts to kick anti-Semitism out of the game."