There were many black super hero before. Just think Blade, Shaft, and more (https://en.wikipedia.org/wiki/List_of_black_superheroes). What I am worried about is the ethno-state promotion behind this movie and people fawning over that message...which is precisely the kind of message the alt-right white ethno-state people are asking for...just with white ethnic rather than black.
If it just fun and entertainment, that's not a problem...but people's reaction and reviews in the media is more about it's politics than it's entertainment value...therefore, I think it's legit to react to raise an eyebrow about that.
You are over analyzing this, its a kids movie. Maybe you watch too much news or something..?
OK I understand you I just wanted to introduce a new superhero who joins the others and actually it's the first black but it's just an anecdote for me it's not at all political or otherwise. I am for multicultuality and openness to others no matter where they come from what is the color of their skin or their religion. I find it a wealth to learn from others who come from different cultures.