I'd just like to echo what FredPuli said...as an American I am very proud of my roots. We are all descended from immigrants who took the chance and left their own shores for one reason or another....and not necessarily due to persecution-but more often to find a new adventure or more prosperous life. Because of this,our ties withe 'the old country' will still be strong-even if only emotionally.
It is the reason there are still so many diverse communities where pride in where we came from is so apparent.
Most immigrants were not treated well,but I imagine African Americans will feel even stronger about how they define themselves because of the way they arrived-and how long the slavery they were under lasted.