The sort of line-drawing animation that is used in this Silly Symphony about cannibals in Africa is interesting.... a sort of animated line drawing, eked out a bit -- arms and legs thin lines, hands and feet big. But the modern viewer will be offended. The extreme stereotype of Blacks will offend the modern viewer, just as, doubtless, some of the modern images we hold to be normative will offend people three quarters of a century hence .... or indeed, now. All comedy, after all, is transgressive behavior at some level, but the line between amusingly transgressive and offensively so depends on viewpoint. Consider the Jew of Malta, Shylock and Fagin or the comedy act of Stepin Fetchitt. One of his stage acts was to sit in a chair and read a paper while one of his comedy recordings was playing.
But this one is offensive to the modern viewer and should be viewed purely as a product of its time. And should be watched and commented on if only to keep the reality that 'Uncle Walt' was an artificial construct, just as much as his cartoons.