The Street by Ann Petry:
She walked on, thinking, That’s another thing. These kids should have some better way of earning money than by shining shoes. It was all wrong. It was like conditioning them beforehand for the role they were supposed to play. If they start out young like this shining shoes, they’ll take it for granted they’ve got to sweep floors and mop stairs the rest of their lives.
Just before she reached her own door, she heard the question again, “Shine, Miss?” And then a giggle. “Gosh, Mom, you didn’t even know me.”