Traditionally, people have used skin color as short-hand for culture, and culture as short-hand for character.
The most important thing people learn is to see individual people as individual people.
Most people have learned that, so it is strange to see racism resurrected in our day as a means of driving a wedge between masses of people and Christianity, and against the very notions of individual liberty. It is a way of getting people to refuse to see themselves as individual moral agents, and in so doing make them more easily manageable by the people who seek to rule them.
Well said.