Philip Weiss of Mondoweiss has a touching post on how Jewish he is. I have no doubt he is, and believe him fully when he tells how it's his Jewishness that drives his animosity towards Israel. Jews are complex, Judaism even more so, and given the right (wrong) ingredients, some Jewish ways of seeing the world can make you intensely dislike Israel. It doesn't make you any less wrong, or obtuse to the stories of the Jews, but it's authentic.
Of course, there's the problem of his readers, some of whom are rabid antisemites, as some of his contributors seem also to be. It's either twisted or tragic when a Jew travels with the people who hate his people, but he'd probably retort that the Jews have become so bad he's got no choice. All the sadder for him.
One of the consistent themes of Mondoweiss is the search for proof the numbers of his team are growing. From time to time they may even, on the fringes. If 3,000 years of history are any indication, however, they won't ever grow much, and they'll always stay on the fringes. Most people don't naturally adhere to positions of self hatred.