A brutal tale.
Too much exposition at first (the dreaded data dump), but once you got to the point, your writing doesn't hold back. Brutal and efficient. Good writing, horrible content. I didn't score, but it would have been a five for writing, one for content (non-con not being my thing).
You will get (are getting) pounded score-wise because the violence (rape) is primary, the incest is secondary.
Also, what's being coloured got to do with it? The race aspect, as I read it, was irrelevant.
Or were you deliberately going for the trifecta to be controversial? I hope not, because your writing is strong enough you don't need such cheap tricks.