I recently watched "I Thank You" (1941), a very jolly and typical Arthur Askey film of the era.
The film opens with Arthur waking up alongside dozens of other people on a platform in the London Underground following an air raid. As he walks along the platform singing a jolly song, he sees a sleeping man who looks exactly like Hitler.
Arthur is shocked but sees that the man has a folded newspaper lying on his chest. He turns the newspaper over but - very strangely - the name of the newspaper has been deliberately blurred by TP TV.
Arthur continues on his merry way and the film continues.
In the original footage, however, the newspaper's name is clearly displayed as "The Jewish Chronicle" which suggests that the man in possession of the newspaper is a Jew and therefore not Hitler and therefore everything is all right.
For some reason, TP TV thinks the joke is unacceptable in 2018.
You can see the original footage here: https://www.youtube.com/watch?v=K1KkTxa49d0
The incident occurs at the very end of the clip.