the holocaust was not over 200-300+ years of continual LEGAL abuse of, the murder OF and domination of one group over another. And even though their #'s were decimated, there wasn't a continual, LEGAL avenue for Germans to discriminate against Jews after the war ended.
The people who were in charge of the holocaust did not remain in power, or control their government. They did not change the rules to favor "real" Germans. Yes, there were issues and discrimination.
Just because Slavery ended in 1865, did not mean that black people went "oh, I remember what we lost, and it'll never happen again".
They still had to deal with being considered non human and non "American" for many decades later.
It's easy as a non minority to say people need to stop making excuses for their lack of achievement, when systematically, minorities have been held down by our culture. Yes, there are many who have found levels of achievement, but you cannot deny that our society has held down different groups of our society.
As for the "would they enjoy living back in Africa" comment....I'm not even sure how to address that. There's only so much condescending, and dismissive attitudes one can read before you want to stop listening to people. It's really easy for someone who (I assume) come from a background that did not experience prejudice and racism to tell others they need to get over it.
It's like telling someone who got molested to "get over it", when it's really easy for someone who was never molested to get over something they never experienced.