If journalism is a primary way we tell the story of ourselves and our time, Michel Martin is a person helping us tell that story — and take part in it — more completely. Her daily NPR program “Tell Me More” was often labeled as “diversity” or “minority” programming. But in fact, she and her journalism are about a more generous and realistic sweep of who we are now — and how we’re creating our life together anew. At the Chautauqua Institution, we mine her wisdom on the emerging fabric of human identity. The third in a four-part series, “The American Consciousness.”