In short, through the tremendous amount of crime and addiction to gov. handouts, black Americans cost the country far more than they're worth. I realize there are millions of blacks (even many who voted for Obama) who work hard, obey the rules, and contribute to society. But overall, they're a completely unnecessary part of the general population ....great Americans like Tom Sowell, Clarence Thomas, Dr. Ben Carson, and a few other conservative blacks aside. The latter are welcome to stay....the rest of the whiny complainers please leave.
Present-day African-Americans, apart from recent immigrants from Africa, would not exist if their ancestors had not suffered the misfortune of being taken from their native countries, transported to the New World, and forced to labor as slaves. If their ancestors had stayed where they were born, they would have married people from their own village or some nearby village. Those who were brought to America came from a large region of Africa, and those who had children had them by people they would never have met if they stayed in Africa. Each person is the result of a particular combination of ancestors who got together and procreated--remove any one of them from the family tree and the later descendants never get born.