There is the problem that our ability to recognize and differentiate faces is quite lazy. It basically uses the simplest set of characteristics it can get by w

There is the problem that our ability to recognize and differentiate faces is quite lazy. It basically uses the simplest set of characteristics it can get by with. This creates a problem when someone interacts with very few people sharing some give phenotypes as their heuristic is far less likely to pick up on differences between the generic phenotype. Basically, the less familiar you are with members of a certain group, the more those members look alike. Basically, the stereotype that all <insert group> look alike does happen, NOT because they do look alike, but because to someone who does not know members of that group, their facial recognition system (mental schema) are not developed enough to tell people apart. Think of it like if you trained a neural network to do facial identification by only giving it white people. Compared to a near identical network where the only difference was that it was trained on a cross section of all of earth's people, which would you expect to do a better job?