Ever noticed that even in sci-fi settings, 90%+ of the time all blacks have English as their primary language, and one with a North American accent with a touch of Martin Eden at that, and if they make political statements or have political concerns, there's a huge chance that their views will be centred around the context of 1800-2020 North American concerns?
Over the course of the last decades of consuming media, I recall three cases of exceptions: (a) the clearly French officer of the EU army in EndWar, (b) Mickey/Ricky from Doctor Who, who at least doesn't behave in a stereotypical North American fashion because he's from UK (but still anglophone), and (c) the primary cast of Black Panther which averts the stereotype hard (but even there we have Killmonger)*. But let's go into, say, the allegedly gathered-from-whole-world cast of Legends, you have Jefferson Jackson (duh) and Amaya who, despite allegedly having a strong connection to her home culture, still behaves almost much the same. Or Jacob in Mass Effect.
Where's the quirky Nobel-grade scientist from the South African Coalition who wants his home country to build a space elevator? The disciplined, patriotic and eloquent French Foreign Legionnaire? The singer who is the son of a Nigerian student who became a singer in Central Europe, speaks Slavic languages, and whose primary political concerns are legalisation of weed and war against Russia? The Australian who adapted to city life and started a business? Somehow we rarely see original blacks like those in media much; instead, they tend to behave in accordance to a very USAian idea of how a black person should behave and think. Even though USA only accounts for about 40M of the world's black demographic.
* == A recent non-sci-fi example I remember would also be (d) the recurring Nigerian janitor and his wife from ER.