The biggest concern is that it sexualises a group of vunerable women, one in three who are the victim raped- often with no support or justice from the police and government.
The other controversy it is an insensitive cultural appropriation with a lack of understanding about historical injustice surrounding the outfit.
Shrug, anyway I am writing a paper on identity and diversity so I researched it a bit.
I'm glad your not offended but it is an offensive thing. People aren't protesting stereotypical Native American imagery because they enjoy being spit on and called names.
There is not anything left to say really. I wanted you all to engage critically with the idea and not dismiss it off hand.
 New York times timothy Williams printed may 23 2012 For Native American Women, Scourge of Rape, Rare Justice A1