Here is someone defending himself against plagiarism by saying that his book was written by a nègre. I'm assuming that in French, as in Spanish, a black man means ghost-writer.
It wasn't me that plagiarized, but the person who wrote the book for me. That shows, then, that you shouldn't use nègres, or ghost-writers of any race for that matter, des blancs, to write your books for you. Plagiarism by proxy?