What is the theme in Desert Exile: The Uprooting of a Japanese American Family by Yoshiko Uchida?

Injustice is a major theme in this book. Desert Exile is the story of how the Uchida family endured the internment of Japanese Americans during World War II. Since internment is near universally regarded as a great injustice, injustice is a major theme of Desert Exile. In fact, even the title "Desert Exile," suggests terrible treatment by a society that one was once a member of.