The further left they are the more vocal they are about hating Jews. Gun grabbers, anti-capitalist, those who want a large central gov't, socialist, commies, those complaining that Dear Leader isn't looney left enough, etc... Mainly the mannygoldstein faction on the island. The BOGers on the island are just as hateful towards Jews, but their mission first and foremost is to defend Dear Leader, and so they have to set their Jew hatred to the side since the administration (at least vocally) supports Israel.
.