What kind of life can be lived with no margins for error?

I just left the theater after seeing Fruitvale Station. My heart is heavy with the injustice of it, and my head is heavy with this thought, which was my big takeaway from the movie: some of us, because of race or class, live lives that have little or no margin for errors. Have a baby, go to jail...and welcome to a life where it seems you can never, ever get ahead again. Where you can't work for more than minimum wage ever again, or where you cannot It seems to me like when I was growing up there were more success stories, but I'm coming to doubt even that. A life lived at the margins gives no margin for error. There are no second chances, or second acts, in some American lives.