Racism: Why does it still exist?

My theory is that people are scared of anything different or new to them. May it be skin color, religious preference, or anything in between.

It's a shame that some racists organizations hide behind Christianity. They then teach these to their kids and so forth. Which is a big reason that racism is unlikely to end.

Yet while they are teaching what they believe is the truth both the Old and New Testaments say that God shows no partiality, but judges with complete justice. Likewise, Jesus showed no partiality. By example, we are also told to show no partiality, but treat all people fairly. The essence of biblical equality can be summed up in the Bible's book of Galatians: There is neither Jew nor Greek, there is neither slave nor free man, there is neither male nor female; for you are all one in Christ Jesus. (Galatians 3:28)