8 out of 10 spies who checked out the land of Israel before taking possession it were against taking the land because of the giants they witnessed living there. This 80 percent were the same who complained about not having enough food and water after leaving Egypt and desired to go back. Nothing has changed.
I all ready posted an excerpt from a book explaining the roots of socialist and leftist antisemitism. Most of the political philosophers who developed socialism were raging antisemites, so the anti-Israel and anti-zionist attitudes of the left should be expected.
http://www.freerepublic.com/focus/f-religion/2522051/posts