Well, this has turned into adiscussion about aspects of American practices in slavery.

I'd like to comment on the original question: about portrayal of British Columbia's natives.

White people's portrayal of amerindians has long been one of either savagery, ignorance, or someone in need of conversion. A white woman of the time would never have been portrayed with bared breasts, for reasons you all know. However, to portray amerindian women in this fashion was an implied condescension to their culture.
As someone descended from the Mohawk nation;
as one whose mother was forbidden to tell ANYONE that she had native blood--because her father would not be hired at any jobs other than the most menial;
And who sees the willful blindness of Canadian society NOW to the horrific problems of native children left to sniff glue on reserves;

I ask: what has changed?

Not much.