I found the image in question and completely agree on how tasteless it is. Had the artist put a description about why they created this, it might have made a difference but I believe it was put there in order to offend. I think you should speak up, this person has no right to post things that are meant to offend people. And if this artist receives enough complaints, they may lose their right to post here (not sure, but I think there is a rule like this).