What is the theme in Tracks by Robyn Davidson?

The plight of the aboriginal peoples is the main theme of the story. As Robyn travels throughout Australia, she witnesses countless examples of the way the Aboriginal peoples of Australia are victimized by the Australian government, and the prevalent racism against the black Aborigines. The treatment of the various tribes is reminiscent of the treatment of North American Indians by the United States government. The Aborigines are forced onto smaller and smaller reservations, where they live like homeless people or prisoners, and often they must live side by side with their traditional tribal enemies.