An Agatha Christie novel/play from 1939. I read the edition with the title 'Ten Little Indians', dodgy enough, but the original was 'Ten Little N*****s', based on a 19thC minstrel song and subsequent children's rhyme. The murder mystery was even set on an island called 'N***** Island'(!) Apparently this was considered fine in the UK until 1985, but immediately altered to 'And Then There Were None' for US publication in 1940:

https://en.wikipedia.org/wiki/And_Then_There_Were_None

Was it appropriate to censor Agatha Christie's unthinking racism to avoid causing offence? I don't have a problem with it in this instance, though it would be useful to get the historical context if there was an explanatory note in the book for why the title was changed. Redacting whole sections is probably taking it too far.

Completely agree with you. The original material should not be censored. It's travesty grrr. I even agree with the previous poster that there should be something in the Preface or somewhere acknowledging the fact that times have changed. It's similar to the case of Russian ballerinas painting titles from 19th cent (I believe) in our galleries changed to Ukrainian ballerinas (eyes roll). Complete nuts. This is clearly taking us to burning of the books scenario .. goddesses forbid. The trajectory of fascism is unmistakable, unless stop is placed on it. Similar to the cases you highlighted recently regarding legal cases against environmentalists (apols I didn't comment, but thought about it).