Aryans

When king Darius I the Great (522-486 BCE) ordered  new, Persian alphabet to be developed, he called it 'Aryan'.

The word 'Aryan' has been used to describe the Indo-Iranian language group, one of the branches of the large Indo-European family, and not without good reason, because the expression is used by several ancient nations, like the early Persians and Indians. The expression has been abused by the Nazis.

For obvious reasons, modern linguists from the west now prefer 'Indo-Iranian'. However, in countries like modern Iran, the old expression is still used.