"I'd agree. Oscar-Hammerish is not sledge-hammerish (even if he did have important socio/political points to make). ;-)"
Yes. I would say that those who were very vocal about their hatred of "You've Got to be Taught" may well have felt the message of the song was laid on with a sledge-hammer, though I assume the only people felt that way hated that message more than the style in which it was delivered :-)