Question: What Cantonese slang term with a history of racially deprecatory usage was also used as a reference in the title of a 2006 drama directed by Nick Broomfield?
Sentence (from "Ghosts (2006 film)"): Ghosts is a 2006 drama film directed by Nick Broomfield, based on the 2004 Morecambe Bay cockling disaster.
Relevant evidence: Yes