Practical human genetic alteration is coming closer to actual use. Intelligence is important and valuable to humans. Finding what genes, groups of genes, or interactions between genes, affects intelligence will be useful in enhancing intelligence and avoiding mental defects. If race correlates with intelligence after environmental affects are accounted for, then that provides some clues in the search for genetic intelligence enhancement.
Yes, race has been used by people to ameliorate their feelings of inferiority, and race has been used by people to gain destructive political power. That doesn't mean there's nothing of value to be learned by the study of race and intelligence.