My local park has a population of 70 endangered birds who will have about 1 offspring each, and a population of 13 invasive birds who will have about 10 offspring each. To combat this invasion, my town introduced goblins into the park. The goblins eat about half of the invasive bird eggs but they also eat 15% of the endangered bird eggs. Park officials say that the loss of those endangered birds is necessary to keep the invasive birds population growth down, but every year there seems to be fewer local birds and more invasive birds. The goblins are also invasive and make a mess just like the invasive birds, so they don't belong in the park either. Apparently many of the park officials have goblin pets so there is clearly some biases regarding the policy.
This analogy was targeted towards you, actually. Its about your evil, retarded, jewish view that systematic infanticide (abortion) is acceptable within western culture to quell black population growth and that the innocent white victims are worthwhile sacrifices for this cause. This analogy is to dumb it down by simplifying the statistics to show you how your view is retarded (bc showing you how its immoral didn't work).
Basically, the result is fewer niglets but even less white babies. Abortion decreases white population ratio while having little to no effect on black population ratio (as they generally have much more children).