The Robert E. Howard United Press Association published a fascinating article titled "Southern Discomfort: Was Howard A Racist?" by Gary Romeo. (Update: The article was deleted a while back ⁠— here’s a link to the Web Archive version). The article covers a good bit of Howard's writings, including his personal letters, to show that he held some extremely racist beliefs (pay particular attention to the personal comments by Howard in the article's second paragraph). Romeo also discusses Howard's infamous short story "Black Canaan," which you can read here.

While the article lays out what I would call a rather pointed case for Howard's racism, Romeo appears to partly excuse this by saying that by the standards of Howard's time and place — the 1920 and '30s South and Southwest ⁠— his racism wasn't that unsual. However, I disagree with this. The fact that Howard's correspondence shows some of his friends reacting negatively to his racism is proof that even back then what he believed in wasn't acceptable to quite a few people. Was such racism commonplace during that time and place? Of course. But it was still not acceptable to many people.
Статья целиком https://www.jasonsanford.com/jason/2010/09/20/robert-howard-racist
Те же самые цитаты из личных переписок, что и у лавкрафта в виде источника. Ну и мб книжки перечитай, если ты не встречал стереотипичных ленивых негров-каннибалов/коварных арабов
у говарда, то ты эти книжки читал тем местом, на котором люди обычно сидят.