There is no DNA for bigotry. Hatred is acquired after birth. So what explains mass murders like the one at a Buffalo supermarket, where 10 people were slain by a radicalized youth who drove 200 miles with a semi-automatic rifle to find a concentration of Black victims?
Racism is an entirely man-made virus. The lyricist Oscar Hammerstein II described it in the musical "South Pacific":
"You’ve got to be taught to hate and fear