Rainbow Pie is a coming-of-age memoir wrapped around a discussion of America's most taboo subject - social class. Set between 1950 and 1963, Joe Bageant uses Maw, Pap, Ony Mae, and other members of his rambunctious Scots-Irish family to chronicle the often-heartbreaking post-war journey of 22 million rural Americans into the cities, where they became the foundation of a permanent white underclass.