National Review's editors are right--Barack Obama has been doing this for some time now, and the McCain campaign needs to push back against it:
"Commenting on campaign tactics has become one of Barack Obama’s signature campaign tactics....Last week, Obama went a step further. At a fundraiser, he said, “We know what kind of campaign they’re going to run. They’re going to try to make you afraid. They’re going to try to make you afraid of me. He’s young and inexperienced and he’s got a funny name. And did I mention he’s black?” Obama is no longer just preemptively defining the opposition to him as illegitimate; he is defining it as racist."
And what's even more important is that if conservatives don't act to help stop this kind of "campaigning" now, Obama and the left will continue it in future campaigns. Opposing Barack Obama is not in and of itself racist. Preach it, conservatives!