Tom Lehrer’s “National Brotherhood Week” on “That Was The Week That Was” — TW3 —notes, in the introduction, that “During National Brotherhood Week various special events are arranged to drive home the message of brotherhood — this year, for example, on the first day of the week, Malcolm X was killed, which gives you an idea of how effective the whole thing is,” before specifying at the outset of a couple of verses,
“Oh, the white folks hate the black folks,
And the black folks hate the white folks;
To hate all but the right folks
Is an old established rule