They aren't scared of other people. They just find them strange or/and new. It's like a new kid comes to a school and everyone thinks his weird.
Nobody teaches you to be scared of other people. You just find them strange like I said. It's not hate or fear.
That doesn't make much sense at all. If they just fine them to be strange, (also pointing out these are just dolls.) then why do they pick the black one for negative things, over white? If they really find them to be strange, they would pick
both since none of those kids are really black or white. A child's mentality is based on what is usually around them, these kids are lighter skinned, not exactly "white" (Not counting that random white kid lol). It's just, society. Now, if I were to tell my kid not to be afraid of black people, they probably wouldn't be, where as if some one continuously talks about how bad black people are around their kids, or they see what those types of people do, that is the mentality they will have.
Your mind does not always just simply know things, it grows and learns every day.