In a journal entry where Orson Hyde is complaining about black people's aspirations, Joseph replies:

If I raised you to be my equal & then attempt to oppress you, would you not be indignant?

http://josephsmithpapers.org/paperSummary/journal-december-1842-june-1844-book-1-21-december-1842-10-march-1843?dm=image-and-text&zm=zoom-inner&tm=expanded&p=48&s=undefined&sm=none#14033105138890139062