I only liked this but I watched it in the morning.
You shouldn't be in blackface, but you doubly shouldn't be in blackface and have title card say "maybe it's the call of the ages--the cry of my race" in the scene. Or later have one read "Your Papa is so sick-his face so pale".
Even if we remove the blackface from this movie, it's still not particularly good. If literally any other movie had synchronized sound first, this movie would have been forgotten.