The Story We Did Not Know About Rosa Parks

Later in her life, Rosa Parks developed friendships and political allies with heavyhitters in civil rights movements around the world, from Malcolm X to Nelson Mandela. Gwen Ifill talks to Jeanne Theoharis, author of the biography, "The Rebellious Life of Mrs. Rosa Parks," about Parks’ influence globally, as well as her financial struggles post-boycott in the 1950s.