When you take serious charges, and you throw them around lightly, you end up dessensitizing the world to the full implications. In light of recent world history, anti-Semite is a grave charge indeed. Perticularly on this webseite. Here is the quote you took out of context:
"Well, why do you call him a terrorist? I mean, one man's terrorist is another man's freedom fighter."
So, in fact, Novack was not saying that he disliked Jews or Isreal, but that he did not find the term "terrorist" to be journalistically objective. I disagree with him there, and you are free to do so as well. But first, you owe the man an apology.