You're asking the wrong people. I'd ask the Hatians. Not just the Haitians, but la gente negra (black people) as they are often on the receiving end of racists statements. My girlfriend ran down to the colmado and a man told her that he didn't like blacks and wish they all would leave as causally as commenting on the weather. She's definitively a coffee with cream color, so the dark skin people probably have a rougher time.
Most Dominicans are decent and treat others with respect, but certainly not all. Most people don't realize how good my spanish is (or maybe they just talk openly), but I overheard a woman saying that she was going to marry a black man because she didn't want her daughters to suffer with a small ass like hers. She was going to check out his sister's rumps first to make sure, etc, etc. I was amused. Of course, I had to check out her culo to judge for myself. She had a point.