Why did Dunbar use "Negro Dialect" in his poetry?

That meant, like other black poets, Dunbar was challenged to write what was acceptable to whites while also trying to maintain some kind of truth and dignity for and about the black race. For Dunbar, the use of dialect was a prerequisite for becoming published and recognized as a poet.

Explanation:

honestly i love the walking dead, mainly the quotes. “well, pardon me young man, excuse the [insert bad word here] out of my gosh darn french, but did you just threaten me? ” sksk (of course it's not the exact words)