NYT Op-Ed on Walt-Mearsheimer Paper

The New York Times has an excellent op-ed on the Walt-Mearsheimer paper on the power of the Jewish Lobby in America. One of its best points is that criticism of Israel or of American policy toward Israel is not necessarily anti-Semitism. The use of the anti-Semitism epithet is effective, but if overused or used improperly, it may become like the boy crying wolf. Then what do Jews do if true anti-Semitism rears its head?