I would say it is the DUmp saying that blacks are animals and nothing more can or should be expected from them.
That's exactly what the primitives are saying.
And they're abetted by the primitives' own Quimbo or Sambo, MrsCorpio Lamond.
In case one's not aware, Quimbo and Sambo were slaves in
Uncle Tom's Cabin who in their positions of authority, lorded it over the other slaves, abusing and mistreating them.