I suppose that they would only represent "disharmony" if you are not in favor of social equality. Any disharmony is likely the result of a conscious tactic on the part of the right, and their allies in the right wing echo chamber, to attack civil rights organizations as a means of currying favor with racist white voters.
All part of the modern version of the GOP Southern Strategy that Nixon pioneered with Harry Dent in 1968 and that was perfected under Lee Atwater. Atwater pretty well summed it up in a 1981 interview:
You start out in 1954 by saying, "Nigger, nigger, nigger." By 1968 you can't say "nigger"—that hurts you. Backfires. So you say stuff like forced busing, states' rights and all that stuff. You're getting so abstract now [that] you're talking about cutting taxes, and all these things you're talking about are totally economic things and a byproduct of them is [that] blacks get hurt worse than whites.
And subconsciously maybe that is part of it. I'm not saying that. But I'm saying that if it is getting that abstract, and that coded, that we are doing away with the racial problem one way or the other. You follow me—because obviously sitting around saying, "We want to cut this," is much more abstract than even the busing thing, and a hell of a lot more abstract than "Nigger, nigger".
Now it's called "dog whistle" politics, because the coded racist words are coded so that they don't grate as much on the ears of non-racists -- only the racists can hear them.
http://en.wikipedia.org/wiki/Dog_whistle_politics