Feibusch was forced to escape from Germany after his work was featured in the 1937 Degenerate Art Exhibition put on by the Nazis to single out the modern style they saw as causing "cultural disintegration".

BBC: Coventry's Feibusch mural 'is historically important'

During World War II, Thomas Olsen hid this "Scream" and dozens of other Munch works in a remote hay barn to protect them from the Nazis, who were torching art they declared degenerate.

WSJ: 'The Scream' by Edvard Munch

An art teacher in Kassel created Documenta in 1955 with the aim of unearthing artworks deemed degenerate by the Nazis.

WSJ: What's On at Documenta, From William Kentridge to Shinro Ohtake