"The discourse about the Indo-Europeans was also dependent on the most powerful movement of the nineteenth century, imperialism. To an even greater extent than concerned the view of Semites, racism was present in the scholars' depictions of how the Indo-European colonizers in ancient times conquered a dark, primitive original population. The Indo-Europeans were presented as humanity's cultural heroes, who, undefeated throughout history, spread knowledge and ruled over lower peoples, and who therefore seemed predestined to remain rulers even in the future."
January 1, 1970
https://en.wikiquote.org/wiki/Indo-European_studies