I'm not retreating into a wider claim. The civil rights issues were literally about "american" not meaning all of us legally.

That is my example for prior usage of the word "american" being biased. It was so biased that people willfully forgot the law and the constitution. Why does it not suffice?

Here is one more I recall:

“When I say all Americans — I mean all Americans...” President Truman when ending segregation in the army

I could keep looking up examples but I feel these are fundamental enough.

Yes african american emphasizes it, there was a need to do that. I wonder why?

Also I should add that I specifically dont give a damn about emoji color. I always leave default yellow cause i rarely use em anyways.