Those are the neighborhoods I am referring to as "once-nice". Detroit with the auto industry may have had a different history, but in the 50's and 60's the black acheiver in our area was pretty much in the middle class category income wise.
OK.
Detroit is an “outlier” on the distribution scale because of the rapid rise in incomes for black Americans and in such large numbers.
My “couldn’t be more wrong” header was unnecessary.
Sorry.
Too easy on the internet.