Movies about racism always seem to contain political correctness, and the white gangster driver, a black musician, is an interesting setup.

In the beginning, the black musician simply believes that racism is due to the white supremacy movement and wants to use civilization to change it, implying that on the journey Don discovers that discrimination is not just about race, but also about status, occupation and so on. The plot involves Don wanting to use the restroom after a show and driving back to the hotel, only to be told that he cannot share a restroom with a white person. Tony beats up a cop for slandering his last name, and Don goes to jail for nothing.

That dialogue in the rain says it all

Tony said, "I know exactly who I am. I'm a guy who's lived in the Bronx my whole life, with my mother and father and brothers and now my wife and kids. That's it, that's who I am. I'm the one who's in a hurry. Gotta go out and make money for meals every day. You, Mr. Big Shot, you live on top of a castle and travel the world performing concerts for the rich, and I live on the street and you sit on a throne. So yes, my world is much darker than yours.

Don got off the bus and stood in the rain and said, yes, I live in a castle. Tony, alone. Rich white people pay me to play the piano because it makes them feel educated, but as soon as I leave that stage, I'm nothing but a nigger again, and that's where their culture is. I endure this torment alone because I'm not accepted by my own people because I'm not like them. So if I'm not black enough, if I'm not white enough, if I'm not man enough, then tell me, Tony, who I am.