Володь, слово "ниггер" все-таки носит уничижительный оттенок, давай уж оставим приемлемое русское слово "негр".
Хм... Вообще-то это слово встречается даже в книжке про приключения Тома Сойера:
"In Ben Rogers' hayloft. He lets me, and so does his pap's
nigger man,
Uncle Jake. I tote water for Uncle Jake whenever he wants me to, and any
time I ask him he gives me a little something to eat if he can spare it.
That's a mighty good
nigger, Tom. He likes me, becuz I don't ever act as
if I was above him. Sometime I've set right down and eat WITH him. But you
needn't tell that. A body's got to do things when he's awful hungry he
wouldn't want to do as a steady thing."