Alan Dershowitz defends Palin:

“Although its historical origins were in theologically based false accusations against the Jews and the Jewish People,its current usage is far broader. I myself have used it to describe false accusations against the State of Israel by the Goldstone Report. There is nothing improper and certainly nothing anti-Semitic in Sarah Palin using the term to characterize what she reasonably believes are false accusations that her words or images may have caused a mentally disturbed individual to kill and maim.”

h/t Glenn Reynolds.