The white people embracedMLK because his message was better for them over the truth Malcolm X was teaching.
Their is no scientific basis for the concept of race. To engage in a discussion from any perspective based on the amount of melanin in one’s skin is ignorant and politically motivated.
Humans are the result of relentless migration and adaptation. Technology and advanced civilization did not happen at the equator. However, skin color was not a causative factor. Survival was.