I'm not particularly surprised. A lot of people conflate family origins with personal identity.
"Kiss me, I'm Irish!"
"You're either with us or against us!"
"Axis of evil."
Race biases. Class biases. Gender biases. Etc etc etc, and most of it is unconsciousness and subjective.
Until you make the unconscious conscious, it will direct your life and you will call it fate.
Carl Jung