The english speaking world is full of accents. Get used to it. And if you think black people are hard to understand just wait you meet a few scottish people.
Ax for ask has nothing to do with accents. Just like pants on the ground has nothing to do with suspenders!
If only one individual is saying it that way then it is not an accept but if a community or a demographic is saying it that way then it is an accent. Some languages have such extreme accents that these accepts become languages in themselves.
In our education system that the government requires all children to participate in, English, phonics, and spelling are taught. If it is not observed, then it is a waste of time. Accents have to do with "pronunciation". The "rearranging" of consonants and vowels are not the same thing. If you do not think we need uniform spelling and language....well then I would be for doing away with education in the area of English and literature. It would be a waste of time. We can communicate with grunts and sign language. I love various accents. I think they add a richness to the culture. If you believe "ebonics" adds to that richness perhaps it should be taught in out public schools as a "sub-language".
re: "ask" It's all a matter of upbringing. I've known Southern blacks who say 'axt'. Northerners have no problem saying 'ask'. Just listen to USA women's soccer goalie Brianna Scurry speak some time and you will see that she sounds like a suburban white woman (she's from Anoka, Minnesota). Having grown up in Brooklyn, NY and now living in the Midwest for over 30 years, I have known Puerto Ricans in NYC and in Chicago. Despite being from the same ethnic group, the two different groups have very different accents. You would not know they were the same people if you just hear recorded voices and did not see them talking.