Oh come on now. It wasn't asked about "blacks". If you had ever been to NO, you would have known just what the poster was talking about. Having spent much time in New Orleans myself and on the phone with business people there, I always thought it was so odd that they spoke with a New Joisy accent.....or as someone else said Brooklyn? At any rate, there are all kinds of accents in south Louisiana.
Yes, I agree with you. Touchy, touchy! I lived in N.O. and also noticed the accent sounded similar to the ones in the Northeast. I was told that a lot of fishermen from that area migrated to Louisiana, thus the intermingling of southern, Cajun, and New England.
See my post # 52.
I'm from Brooklyn; I don't recall hearing Brooklyn accents in New Orleans; just a very distinctive accent different from other Southerners.