combo of fear, ignorance and selfishness

Fear of the unfamiliar at the beginning. But now, it is learned from others. We aren't born racist. We must be taught.

'Scapegoating' is one fundamental cause...

Mine was pain and anger.

Divide and conquer

Some people can only see the colour of the skin, and not the beauty of the person!

Sexual disinterest.

He @Devil

egotism

Humans

dont trust those who are different then yourself...

Fear and ignorance

Fear.

the higher moral ground

bad genetics.