Wiktionary
racial supremacy
n. 1 The (believed) superiority of the people of one race over others. 2 The belief that a particular race is inherently superior to others. 3 The belief that a particular race should rule over others. 4 The fact of or an instance of the people of one race being dominant over others.
Usage examples of "racial supremacy".
That elite legion, dedicated to the racial supremacy of the derro, comprised the most trusted of the Theiwar troops.
Generations of conditioning about racial supremacy were impossible to conceal.