Why do people hate blacks?

I keep seeing the word "nigger" posted everywhere and it appears a lot of people here hate black people. Why?

Not 33

Proof of What Africans did and did not accomplish is a looooong post to make.

As far as the validity goes, there is two completely contradictory stories massively publicized. One that african universities sprung up in africa and spread their knowledge to greece / Mediterranean. (even rapped in Nas's lyrics)

And the other is of the copts, who slowly developed culture and technology built on older eastern traditions, the civilization eventually became over run by nubians and for the next few dynasties shrunk and decayed.

From what I have read, second is far more true, to say though that Africans did not even make rock paintings may be going far, invention and civilization for Africans don't stack up in evidence and It is very difficult to supply a lack of evidence, rather evidence that someone elses "burden of proof" is flawed.