Are Einstein and Arendt silly?

Here's a copy of the letter they signed: https://www.marxists.org/reference/archive/einstein/1948/12/02.htm

If you don't like the site, you can find it elsewhere with a quick search.

It begins, " Among the most disturbing political phenomena of our times is the emergence in the newly created state of Israel of the "Freedom Party" (Tnuat Haherut), a political party closely akin in its organization, methods, political philosophy and social appeal to the Nazi and Fascist parties. It was formed out of the membership and following of the former Irgun Zvai Leumi, a terrorist, right-wing, chauvinist organization in Palestine. "

That "Freedom Party" was the precursor of Likud.