"Heart of Darkness", written by Joseph Conrad in 1889 in England, has been criticized as racist "for the way the author describes poorly every person he writes about and miscast the Europeans as the victims of colonization", according to Nigerian Author Chinua Achebe.
In his essay “An Image of Africa: Racism in Conrad’s Heart of Darkness” (1977), the Nigerian author commented that the vision of Conrad was as racist as other African stories on the 19th century.
Another argument the author expresses is that the book emphasizes Europe’s idea of superiority over Africa.
That is why some people consider "Heart of Darkness" as racist.