"As you grow older, you'll see white men cheat black men everyday of you life..."(Lee 252).
White and Black men are not equal in anyway, People will believe the white man over the black man every time. Even in the trial Atticus had a great argument and is right in every way but trying to make other people think they way you think about a black man is near to impossible.
Walter to George: "What the hell you learning over there?... they teaching you how to be a man? How to take over and run the world? They teaching you how to run a rubber plantation or a steel mill? Naw---just to talk proper and read books and wear them faggoty-looking white shoes..." (Hansberry 85)
Walter and George are both men who are black but the main difference is one of them are wealthy. George has a good education and is quite wealthy but Walter is trying to see hoe much of a man he really is and he brings up jobs that poor people would be doing. That shows how different they really are. Walter has no education and has to work very hard for anything he has. George probably worked hard but in a different way, for a post secondary school education to be more self standing in the world.
In both the play and book there are characters that are white and black, Poor and Wealthy, Children and adults. that matters because that means their are similar characters. Atticus and Walter are the head of the household but one has a very good job and one doesn't and throws away his money by trying to get more in the world.