Based on what I have encountered, the reason for the Americans (white) to hate the Dominicans is the way they live and their pride. The Americans feel that they are superior than the Dominicans. That is when discrimination enters; Americans (white) favor their fellow American while they don't favor Dominicans. This fact is true today as many nationalities feel that they are discriminated in the US. The Asians particularly Filipinos get unfair treatment from Americans (white) so it is also possible that Dominicans get that kind of treatment.
Another thing is Americans get wrong perceptions about Dominicans. They think that the traits of Mexicans and Dominicans are the same. What they hate with Mexicans will also be carried over to Dominicans. If somebody disagrees, then you haven't experienced it but believe me, it will be bound to happen to you.
Another thing is Americans get wrong perceptions about Dominicans. They think that the traits of Mexicans and Dominicans are the same. What they hate with Mexicans will also be carried over to Dominicans. If somebody disagrees, then you haven't experienced it but believe me, it will be bound to happen to you.