In what 3 ways does Keneally portray Jimmie Blacksmith as a victim and not just as a heartless murderer in The Chant of Jimmie Blacksmith?

Keneally's main goal throughout this book is to show that Jimmie became a killer because he was a victim, tired of being exploited over and over again by white society. 
The story starts off in the year 1900, which was a heightened time of prejudice against the Aboriginal people of Australia, as well as any people of color. In fact, the group of laws known as the "White Australia" policy was enacted in 1901, restricting the number of non-white settlers who could come into the country. This racist societal atmosphere is the foundation for all the ways in which Jimmie is abused in his life. 
Jimmie is half-white, half-aborigine, raised by a white foster family. He's told that he should abandon aboriginal culture entirely, join white society, find a job, and marry a white woman. 
One way in which Jimmie is definitely a victim is that every time he is able to find work, he is cheated out of the money he is owed by the white men he works for. This is especially terrible when he works for the Constable, who sexually abuses non-white prisoners. 
He also faces prejudice when he marries Gilda, a white woman, and before the wedding can take place, he is forced by the minister's wife to chop a stack of wood. She says she'll have him arrested if he doesn't. Gilda is also pregnant with another man's child when he meets her, so Jimmie has to deal with judgement from others about that. 
Overall, Jimmie is a victim because he has been forced into alienation from both white and aboriginal society, leaving him without a way of life in which he has a chance at happiness.