Old dude,
I am blonde, blue eyed and for all intrinsic purposes had relatives who hailed heil. Lets say that an American GI Jewish clerk did some magic with some paperwork in 1948 Europe and saved me from a Liebensborn orphanage. Growing up in America I heard the hateful or suspicious post war remarks in the barber shop and from relatives and neighbors. That my Dad had black hair and looked very Jewish and I had white hair was common question I received. Looking like a little storm trooper in 1951 made initial enemies of potential friends and unwanted friends of potential enemies. For these reasons I understand what immigrants feel in a unique way.

It is always about what you are taught. In this Shindleresque case its all nurture and no nature.

Teach your children well.