Whites, Pt. 2

Satirical singer/songwriter Randy Newman (yup, the guy who does the Toy Story theme) recently made a song called "I'm Dreamin'" in which he takes on the voice of a voter "dreaming of a white president." The best line:

"He won't be the brightest, perhaps/But he'll be the whitest/And I'll vote for that."

Rolling Stone magazine declared it as "satire that will be misconstrued, denounced, and used by no one as a campaign theme. Brilliant."

Is satire of offensive material offensive in itself? Randy Newman has made similar tunes with an unreliable narrator before: "Political Science" is told by a politician saying "Let's drop the big one/And see what happens," while "Short People" claims that the title group "[has] no reason to live." Newman is anti-racist but hates, well, haters. However, is his seemingly earnest but actually acidic humor the right way to go about it?