What does this poem mean/signify?

In this poem, langston hughes is saying that he’s the darker brother; part of america with a different heritage and life story. he talks about how even though he “sings america,” (is patriotic), because of his background, he is treated lesser than the “company” and is made to use separate facilities. hughes says, “I laugh, and eat well, and grow strong,” showing that he is no different than anybody else in america, because they all share these commonalities. when he says, “tomorrow,” he means the future. he’s signifying that come the future, nobody will dare to treat him differently, for why would they treat one of their own any different? come the future, the “company” will see the beauty in differences and be ashamed of their actions. he then says, “I, too, am america,” which means that he is just as much of an american, just as important to america as anybody else. in short, this poem signifies the progression of civil rights and the decreasing of racial stigma as time goes on.