Accent depends on where you were born/raised, not on your race.
Race, ethnicity, accent, language — all of these are complex topics with plenty of nuances. Short of writing a dissertation, no simple reply on a web forum will appropriately capture them. The good news is, we don’t need to, since most Americans are familiar with African American English, whether they know the term itself or not, because African Americans have constituted a distinct culture in the US for all of the country’s history.