Is "white," a nationality, race, ethnicity, language or political or religious grouping?
DNA science uses "Haplogroups," which are the closest thing to a "race" that I am aware of using science.
DNA science uses maternal (mt-DNA) paternal(Y-DNA) and percent geographic origin estimates (Autosomal)
Yet using that metric, a given geographic area (which many associate with "ethnicity" too, will have several Haplogroups.
Y-DNA Haplogroup R1b is possibly the most common across much of Europe, yet it occurs with high frequency in Italy, Spain, France, UK, Germany Scandinavia.
Is R1b a "race?"
Then all the other way on the globe, Japanese are highly "racist," believing themselves superior.
A highly educated Japanese man that I used to know, declared Koreans to be very dirty. Taiwanese, too.
You will all note IQ testing proves Asians to be the "brightest."
Japan restricts immigration aa lot.
Therefore the concept of racial superiority is NOT limited to "whites."
Biology can show that living highly evolved organisms have affinities/preferences for their own kind. Science.