Aryan does not equal white.

Definitions of race are very culturally dependent. A few decades ago South Asians were regarded as caucasian (I have an American encyclopedia published in the 1950s that says so), a century earlier so were some East Africans (Somalis IIRC). The current western definition of white does not include them.

Similarly the current American definition of black includes people most of the rest of the world would not consider black - we sometimes have to be told that some people identify as "black" (what Americans call passing as white).