Regardless, when Falcon was Captain America in the comics after Rogers was turned into an old man, the immediate storyline was how people didn't accept him as Captain America--mainly because he was black. He was held to a stricter set of standards by the public, and the writers had him focus on different issues. One of the main issues was police brutality against African-Americans. Not saying the story was good, but it's how they dealt with him as Captain America so, again, it shouldn't be any surprise that they're doing it in the tv show.