I agree with most of this, except for the statement "Because if black people went to our own country or back to where our ancestors are from. Any other minority group would then be the "black people" of america and you'd just have the same problems we are having today."
I think African Americans are a unique minority group due to the inescapable, historical fact of slavery. You often hear white people complain about the very idea of reparations, or assert that they have no guilt because they, personally--and all white Americans alive today, haven't owned slaves. But you can still be responsible, still owe something, even when there is no personal guilt. The society we live in today
is our responsibility, and it is still feeling the effects of slavery. Who else is in a position to do something about it? It's us. It's like when you borrow money from a family member, you may feel some resentment toward them because you're beholden to them. You know you have to pay them back, but in the meantime, longstanding family grudges and rivalries will hang over the debt; hence, the resentment. Today's whites didn't "borrow the money," but they still have a responsibility, which they see as a debt, which makes them resentful.
The American Civil War, which was fought over political and property rights (i.e., slavery) ended a century and a half ago, but some important unresolved issues are still causing conflict to this day. For example, the Republican party, whose support base is in the old Confederacy, has been in a low-grade rebellion against the current president (who just happens to be black) for the past 7 1/2 years. The South keeps fighting for states' rights. Here in Texas, the Republican AG's office has sued the Obama administration
40 times. The South is still not as well-developed or wealthy as the rest of the country, as was the case in 1861. Except for Texas and Florida, Southern states
receive more from the federal government than they pay in taxes (highly ironic, given their anti-federal government ideology).
All this is just to say that black Americans are uniquely woven into the fabric of this country, and as a white person, I think it's been largely for the better. I can't speak for how African Americans feel about it, but for me, it's hard to imagine there being a net advantage to an all-black enclave of American black émigrés.The trend, at least in the developed world, seems to be toward more racial/ethnic intermingling, not self-segregation.