What study claims to be a science,but only promotes the idea that biological races exist,favoring one race over others?

Question

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Eugenics is a pseudo-scientific belief system that claims to improve the genetic quality of the human population. However, it is fundamentally biased as it promotes the notion that certain races are superior to others and that only these “superior” races should be encouraged to reproduce. Eugenics has been responsible for promoting much of the racist policies in history, leading to the genocide of millions of people.

What Study Claims to Be a Science,but Only Promotes the Idea