In the early 1970s, David Copus, a young, long-haired lawyer, teamed up with his government colleagues to confront the mature and staid executives of AT&T over the company's treatment of its female and minority employees. Their disagreement resulted in a $38 million settlement that benefited 15,000 employees, more than 13,000 of them women, and changed our perceptions of women's and men's roles in the workplace forever. Copus, who worked for the Equal...