Charles
I won’t call him leftist, but he’s not exactly a rightwinger either. When a guy says socialism is the future of the west (and he means it in a good way), considered attacking the weekly standard, hates Bush, neocons, christians… well, we are well outside our typical left/right dynamic, aren’t we?
And anti-semitism is not the exclusive province of the right as you yourself have documented. look at jim moran or cindy sheehan.
I think everyone trying to blame the right wing or the left wing for it, are off their rocker. but the anti-semites on the other hand, of all political stripes, bear some moral responsibility here.