The number of immigrants living in the United States and Western Europe continues to grow. As the foreign-born population increases, so does anxiety about our identity.  What does it mean to be American or British or Italian today? How does our identity–our ethnicity, gender, and/or race–change how we vote and contribute to civic life? These are the questions  Gary Younge  seeks to answer in his new book, "Who Are We…And Does It Matter in the Twenty-First Century?" As the British-born son of Barbadian immigrants, Younge, who currently lives in the US, weaves the story of the struggle with his own identity into an investigation of who we are today. Younge speaks with us about identity and his book.