Actually, that is a human trait you will find everywhere. Sometimes it comes in a cultural disguise (unbelievers), sometimes hidden away, because the rich guy/woman might share the wealth, but wherever you go, people are suspicious/hateful of strangers. Only group exempt from that is teenagers, who seem to be less risk averse, but if socially lower ranking also go full foreigner hatred to boost self-esteem.

Milk the hatred and distrust for the benefits (Always double-check on foreign science! ) and name it to everyone falling for it as what it is: Ancient Ape bugs. So mild mockery would be the best reaction i guess.

Social suppression seems to have failed on a large scale recently.