I don’t have problems with calling things by their true names. So, I don’t think Palin erred in using the correct phrase — blood libel — to describe the heinous rhetorical attacks leveled against her.
Barry Rubin does an excellent job explaining precisely why her word choice was so accurate.
Jews have suffered inordinately from blood libels, but it doesn’t mean that they’re the only ones against whom that particularly malevolent type of falsehood is uttered. Call things by their true names. That’s part of freeing oneself with the truth.