You can't judge the speech negatively on its merits, since emphatic negation is a regular feature of many languages.
But the speech isn't in "many languages", it's in a particular language where the double-negation is considered incorrect, therefore there's no need to make assumptions about race or background to consider the speaker ignorant.
Emphatic double negation is not considered incorrect in African American English or other English dialects where it appears. It is used regularly and correctly, which is no surprise since it is a feature of many languages. The reason it is called incorrect is because these are historically the dialects of impoverished and oppressed groups. This is, again, the point and the problem.
Academically speaking, that is a matter of some debate. Pragmatically speaking, it's easy-- are they speaking the language they grew up speaking? Then it's correct. What you call "broken English", assuming native speakers, are just poor (i.e. impoverished) dialects.
To be clear on what I'm saying, an AAVE speaker can attempt to speak some other dialect and fail, producing broken constructions similar to non-native speech. But almost none of the speech labeled as such falls into that category.
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You can't judge the speech negatively on its merits, since emphatic negation is a regular feature of many languages.
But the speech isn't in "many languages", it's in a particular language where the double-negation is considered incorrect, therefore there's no need to make assumptions about race or background to consider the speaker ignorant.
Emphatic double negation is not considered incorrect in African American English or other English dialects where it appears. It is used regularly and correctly, which is no surprise since it is a feature of many languages. The reason it is called incorrect is because these are historically the dialects of impoverished and oppressed groups. This is, again, the point and the problem.
The speech is correct.
How do you know the speaker is talking in AAVE and not just broken English?
Academically speaking, that is a matter of some debate. Pragmatically speaking, it's easy-- are they speaking the language they grew up speaking? Then it's correct. What you call "broken English", assuming native speakers, are just poor (i.e. impoverished) dialects.
To be clear on what I'm saying, an AAVE speaker can attempt to speak some other dialect and fail, producing broken constructions similar to non-native speech. But almost none of the speech labeled as such falls into that category.