In an attempt to be seen as "one of them", some Jews go out of their way and up the ante in their attacks on Israel. They take the protest to crazy, unrealistic levels, unlike anything else. Even if you believe that a boycott is needed, which I don't, there are enough of those who are not Jewish who will lead the attacks. Sooner or later you will realize that there is nothing that you can do to gain true acceptance in the wasp crowd. Eventually you get stung and usually it is in the back.
Ex-FM Lieberman: Firebomb attack in Jerusalem a reminder that norm is Arab terror against Jews (Haar
from the article: Dilemmas U.K. Jews face: Israel boycotts, concerned support, Beinart