If you have any doubt that antisemitism is a persistent problem in California and the U.S. as a whole, you need only consult the voter information guide for the upcoming primary election. That’s where Don J. Grundmann, an independent candidate for governor, has written a crazy anti-Israel rant that is as sinister as it is bizarre. It’s in his “ candidate statement ,” page 24. Grundmann claims, among other things, that conservative activist Charlie Kirk was “murdered by [a] shape-charged bomb Israel used”; that the World Trade Center was destroyed by Israeli art students, and that “Israel rules our conquered Republic.” For good measure, Grundmann attacks Christians, too: “Talmudic ‘Judeo-Christian’ values don’t exist,” he declares. It would be nice to think that Grundmann is alone in his incoherent ramblings. But they reflect content widely available on the Internet, and bear a strong resemblance to the nonsense put out regularly by podcasters on the far left and far right.…