I'll tell you the story of Oseola McCarty. She died just a few years ago at the age of 91. She was an African-American woman from Mississippi, who earned a living by washing and ironing other people's clothes. McCarty, who never married, was in the 6th grade when she had to leave school and take over her mother's laundry business while she cared for a sick aunt. "All my classmates had gone off and left me so I didn't go back," she said. "I just washed…