[RV 1.100.18] is the only one among these that contains a word meaning white or light. Given that the very next line begins with a reference to the s… - Hans Henrich Hock

The abuse of linguistic prehistory and early history in Europe in the 19th and early 20th centuries is well known. A racial interpretation of the earliest stages of Vedic Sanskrit, projected back into Proto-Indo-European, formed fertile ground for the racist "Aryan" ideology, the most horrific outgrowth of which was the genocide of Jews, Gypsies or Roma and other so-called "inferior" races carried out by the Nazis in the name of Germany. It is also a fact that a somewhat milder form of racism characterizes a large part of the overall Indology of the 19th and early 20th centuries. (232)

A few things can be established with certainty, others with a good degree of likelihood, and yet others remain entirely uncertain.

“Indo-Europeanists must exercise caution, lest they unwittingly support ideologically motivated agendas”!