The most common and most likely answer to this crossword clue is the 5 letter word TUTSI
I've seen this crossword clue in The Times
T
U
T
S
I
More clues leading to the result TUTSI
- Tribespeople's trust, oddly, is rising
- African expresses disapproval with India
- Bantu-speaker expresses disapproval over island
- African king is raised as a Rwandan
- African expresses disapproval with Indian leader
- African mentioning child’s foot
- Source of thread in suit woven for someone from central Africa?
- African boy king is back
- Rwandan is a Pharaoh resurrected
- African in classicist, utterly upstanding
Buddy explains!

The straight part
We know that "Rwandan" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case rwandan = tutsi.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.