What about the word "Negro", and the use of "Blacks" vs "African-American"? Words has weight and it is indeed crucial to understand, or at least be aware of the nuances.

Thank you for the article! Unfortunately, the word "Negus" is not enough known within and outside the black community.

The reason you exposed behind the transition from "Negus" to "Nigger" was quite philosophical and deep symbolically speaking.