The practice of labeling people by sexual orientation--homosexual, heterosexual, etc.--started only a century ago. At times labels can help make sense of our world, but at other times labeling individuals can be dehumanizing and can even be a form of injustice. Our sexuality need not define us, argues Jenell Williams Paris, anthropology professor at Messiah College and author of The End of Sexual Identity: Why Sex is Too Important to Define Who We Are. Shirley Hoogstra hosts.