"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. The “Aryan” colony of India came to have a special place in this context. The scholars' racist attitude made them seek evidence in the Vedic texts that the ancient Aryan immigrants (aryas) had had a racial consciousness, and that the caste society was a kind of apartheid system from the very beginning. But reference to the higher castes as “Aryan brothers" could also be used for humanitarian aims. By referring to the relationship between Europeans and Indians, people imagined that they could more easily reform the Hindu culture and modernize or “Indo-Europeanize" Indian society."
January 1, 1970
https://en.wikiquote.org/wiki/Indo-Aryan_migrations