Because God did not intend it that way. And, if you don't believe in God, then it did not evolve that way either. It is mean to keep hating Black people. They contribute to this Society and pay taxes, serve in the military, have fought in foreign wars, have saved the lives of millions of White people working as policemen and firemen, as nurses and doctors, and serving in combat have saved comrades at arms who were White. Black US citizens have donated blood and saved White lives that way and Black people have donated organs and saved White lives that way. Black people have helped White people out by the side of the road and have donated their life savings to institutions that have served White people as well as Black people and people of other races. They've been doing these things since before you were conceived and born. God created these people so take it up with the Almighty!