That, at least, is my own opinion. The questions for debate on this thread center on that specific issue. The claims themselves:
FIRST, that the American Israel Public Affairs Committee, usually referred to by its acronym, AIPAC, essentially “controls� the American media. This “control� consists of squelching and stifling all criticism of Israel, and of enforcing support of Israel on the part of Government officials. Further, this claim has often explicitly included the corollary claims that virtually ALL support of Israel that appears in US media comes from “AIPAC fronts� and “Israel Defence Force disinformation specialists,� and that US support for Israel, both at the governmental level and from the public, is attributable to the control of the AIPAC conspiracy and to nothing else. There are other assumptions in this claim of AIPAC “control,� but those will do for the moment.
This claim is often put forth in the form of propaganda cartoons, like these:


Now, no one is saying that there are no Israeli or Jewish lobbyists; there certainly are, just as there are lobbyists who advocate policy and provide press releases on behalf of, say, the pharmaceutical industry or trial lawyers or the nations of Canada and the United Kingdom. But the claims about AIPAC and the Israeli lobby go rather far beyond simply noting its existence. The claims are about conspiracy and control.
SECOND, it has been alleged, and very often, that one, at least, of the principal methods by which criticism of Israel is squelched and suppressed by the conspiracy is by routinely attributing all criticism of Israel, legitimate or not, to anti-Semitism. This, too, is often expressed in propaganda-cartoon form:

Since criticism of Israel and Israeli policy which is NOT dismissed as anti-Semitism, from Israelis and Jews themselves as well as from others, is not at all hard to find -- read any Israeli, Jewish or American newspaper or newsmagazine -- this claim strikes me as pure falsehood, pure propaganda.
The questions for debate are, as I stated above:
Should there not be proof or evidence given for these claims?
If so, what is it?
Are cartoons like the ones above actually contributing to the debate, or do they amount to inflammatory smears and nothing more?