The Jews who boycott Trump at AIPAC conference betray Judaism

From the news media:
300 American rabbis, Jewish figures vow to boycott Trump's AIPAC speech.
A group of American rabbis is planning to boycott an upcoming speech at the AIPAC conference by Republican presidential candidate Donald Trump.
About 300 rabbis and other Jewish public figures, led by Rabbi David Paskin, have created a Facebook group named "Come Together Against Hate," in which they called for a mass walkout during Trump's speech.
Rabbi Erik Yoffie, a past leader of American Reform Judaism:
We have been urging rabbis to simply not attend the Trump speech and let our absence be felt and noted.
I am not surprised by the action of David Paskin. He advertises himself as a Rock N’Roll rabbi, and in this capacity his duty is to entertain and he intends to use the AIPAC conference for his own entertaining.
And I am not surprised by the action of Erik Yoffie as well – he has always followed the policy guidance of Democratic Party that has begun to realize that Donald Trump has a good chance to become an American President since he is supported by the non-racist and democratic “white” majority of the country.
The 300 number of boycotting rabbis and Jewish figures is relatively small as compared to the about 15, 000 of AIPAC Conference attendees. Nevertheless, I am surprised by their desire to join the boycott because this boycott is a sort of violation of Jewish Torah-based morality.
This point of view has nothing to do with personality of Donald Trump.
The Golder Rule of Judaism is clear – “That which is hateful to you, do not do to your fellow. That is the whole Torah; the rest is the explanation; go and learn it.”
We the Jews are always demanding from the others to give us the opportunity to present our point of view on everything including on the desirable Israeli-American relations. And suddenly, we want to deny Donald Trump a Golden Rule right to present his views on the desirable relations between USA and Israel.
We the Jews are demanding the end to the boycott of Israel by those who do not like Israel – because it is unethical and contrary to the Golden Rule. And suddenly, we call for an anti-Golden-Rule boycott of somebody even without presenting this somebody the opportunity to speak out.
That is one more illustration to the “tragic state of American Jewry” which was perfectly described by Caroline Glick in her paper “The Tragic State of American Jewry” and was detailed in my post “What to do with the Tragic State of American Jewry”.