@shewolfnm,
NO it isn't:
The OED 2nd edition defines "negress" as:
A female Negro.
Negro:
An individual (esp. a male) belonging to the African race of mankind, which is distinguished by a black skin, black tightly-curled hair, and a nose flatter and lips thicker and more protruding than is common amongst white Europeans. In the nineteenth and twentieth centuries also applied (now somewhat less frequently because of the increasing use of the word Black) to individuals of African ancestry born in or resident in the United States or in other English-speaking countries. (Now customarily written with a capital initial.)
Dr. Martin Luther King used the word "negro" - he was a MAN OF GOD. I
SINCERELY DOUBT a MAN OF GOD was using the word NEGRO as a RACIST EPITAPH.
Negro is a CORRECT RACIAL TERM TO DESCRIBE PEOPLE OF BLACK AFRICAN DESCENT.
My MOTHER calls other black people negroes - that isn't offensive.