Suppose I in later years, not content with sprogs wreaking havoc around the house, decide that a black lab would be a great addition to the family. Sprog may have seen the original Dambusters film with original references, suggesting 'Nigger' would be a great forename for the latest Aspera family member....Why not? - Its in honour of the big dog himself, sitting on a cloud somewhere in dismay now.
Given that the word 'n****r' is used as a label so frequently now on the radio. television & written media by those who claim to be so offended by it I don't see how naming a dog in a film, according to a character who was every bit associated with the squadron as Guy Gibson himself should be outlawed by the PC brigade.
- Oops CashMachine beat me to the point