I don't want to admit this kind of division of humanity as part of our life on the earth. I just want to cloud my eyes with my hands. I see racism is very deep-rooted in the brain which was made by God or Satan. If I were a white man, I might be a racist.
There are different theories of origin of human on the earth. One is that the black people originated from Africa were spread to the other parts of the world and changed their skin color adapting themselves to the climate. In this case, the species of human is just one. There is no ground for racism. The other is that different species of human developed separately in different regions of the world. But in this case, does this theory support for the racism? Definitely no! We cannot deny the diversity. If we do, then this world will collapse. Diversity is one way of supporting present system of the world. Sorry my comments were too long^^