Why are American Jews so afraid of one of their own?

[Israeli]

5. And so it should be ....

…...but to me on the other side of things American Jews meddle too much in our politics ,
especially those on the Right .

However the article was about portraying the Democratic front-runner as an anti-Semite.
Why do they do that ?????

Im used to our Right wing labelling anyone they don't like politically as self hating traitors ,
Arab lovers etc etc but this is not your right wing .

I think the article hit the nail on the head :

In this warped and backwards reasoning, Sanders is, absurdly, guilty of fomenting anti-Semitism because he has supporters who believe that all people living between the Jordan River and the Mediterranean Sea should have equal rights.
All this is a sign of just how far to the right the American Jewish establishment has lurched during the Netanyahu era. Had he remained in Israel on the kibbutz, Sanders would likely be just another septuagenarian supporter of the left-wing Zionist Meretz party. But in many Jewish communities in the United States, even views like those of Meretz have long been considered beyond the pale.