Help!!!

There is a picture in my computer of a woman created by a graffiti artist that I hate, and yet I respect that the artist is bringing attention to a harsh reality in Brazil, and in a lot of countries of color.

Why is the darker woman always demonized?  Why is there a saying that Brazilians prefer the lighter skinned women to marry, and the darker skinned women to have as a mistress, or more bluntly for sex?

I can't help the way I feel about this image because I am a darker skinned sister, and my gut reaction every time I see this image, whether it be in my computer, or from a van/bus going up Avenida Niemeyer in Rio.  

I can't decide if its the negative energy coming out of the eyes, or the almost pointed ears, that makes me think of evil, and I'm not sure what this artist meant to represent.  What I have come to respect is that having seen numerous graffiti artist retag or paint over old work, this image has not been changed significantly in the past three years since it came to my attention.  Are the other artist acknowledging something that they respect in the artistry displayed here, or is there a another reason this image has not been changed.  I venture to guess that its because a lot of the Brazilian graffiti is in your face about the negative aspects of their culture, as well as the positive and they realize that this stereotype of the dark skinned woman is a reality in Brazilian culture. 

Another image that I find offensive is a graffiti artist's work I found in Sao Paolo.

I can not presume to know what the artist meant by this image, but the fact that the woman is faceless and represented naked and semi-starved is not beautiful to me personally.  I constantly fight with my own weight issues and again as a darker skinned woman maybe I'm over sensitive, but why doesn't she have a face, or feet?  Questions like these plague me, yet I also respect both artist because they've brought a very real part of Brazilian culture to light.