At the risk of sounding racist, many blacks don't see this as their country, they see it as the place where their ancestors were brought to because of slavery. I don't want to demean the vast majority of the loyal black Americans who indeed love this country and who have fought and died for this country. But among the underclass, I do believe they do carry that attitude. I'm not a racist, but I am an attitudist. And people usually end up where they are because of their attitudes, and not their race.
Racism exists in this country, but it can be overcome by any individual who has the "content of character" (gee I wonder who first said that?) to perservere through it and not let it get in the way of their dreams.