It's actually a kind of 'echo' of the short/full title of the play 'Marat/Sade' by Peter Weiss. The full title though is: 'The Persecution and Assassination of Jean-Paul Marat as Performed by the Inmates of the Asylum of Charenton Under the Direction of the Marquis de Sade', or (I'm told, I don't speak German): Die Verfolgung und Ermordung Jean Paul Marats dargestellt durch die Schauspielgruppe des Hospizes zu Charenton unter Anleitung des Herrn de Sade)...as I said, I don't speak German, but that does 'look' German to me. Apologies to native speakers if that's not right!