For instance, I've noticed that some people use the Jews as a sort of warped magic mirror, accusing them of things that they themselves are obviously guilty of. When the Old Etonian Tam Dalyell claimed that there was in this country a Jewish "cabal" of politicians wielding disproportionate influence, did he not consider the fact that, since time immemorial, the country has been run by overprivileged public schoolboys such as himself, allowing barely a look-in for equally (or, perish the thought, more!) electable and capable citizens of working-class origin?

Similarly, George Orwell could write in 1940 that he had nothing against Hitler, and follow up this gem with the declaration that European Jews would prefer the Nazi social system to that of Britain, "if it were not that they happen to persecute them". This would be the same Orwell (another Etonian!) who was revealed as spying and squealing on his leftwing friends for the CIA in the immediate postwar period, would it? Mmm, he'd have been quite at home in Nazi Germany himself, then.

Then there is Tom Paulin, he of the Ulster Protestant heritage, who has always seemed so unsuited to the dignity and stoicism of this ill-used, long-suffering tribe. Never mind: by shrieking away about the "Zionist SS" who gun down "a little Palestinian boy/In trainers, jeans and a white T-shirt", Paulin can be teleported to the moral, or at least fashionable, high ground and find himself the hot hunk of the humanitarian hop. Still, you've got to wonder if his refusal to see anything wrong with the murder of American Jews who settle in Israel means that he'd be equally sanguine if his relatives in Northern Ireland were murdered by looners whose nationalist creed dictated that Ulster Protestants were asking for it by settling in a country not "theirs".

So emboldened by the filthy free-for-all, the danse macabre of resurgent Judeophobia - attacks on Jews in this country have risen by 75% this year; and since 2000, there has been a 400% increase in attacks on synagogues - are the ignorant armies of darkness that even Germans are opening their yaps on a subject that you'd have thought they'd have the sense, if not the decency, to keep away from. Just a few weeks ago, a German MP was forced to resign after claiming that the Jews were responsible for Soviet army "atrocities" against the defeated Nazi state (makes you want to go back and bomb Dresden all over again, only properly this time). And in a sort of Hate version of the Eurovision Song Contest, Greek composer Mikis Theodorakis weighed in with his carefully considered view that the Jews are at the root of all evil. So, presumably, he won't be wanting the royalties from one of his most notable works, which documents the tragic love story of two young Jewish inmates of a concentration camp. Or maybe he can rejig it, to show how evil this pair were, and how they deserved what they got.

To contemplate the thought processes of such individuals makes any decent person want to wash their hands until the slime of hypocritical hatred is swept away. But when whole sections of society peddle such lies, it's scarier still. And when carriers of the disease are shielded by those who govern us, you start to believe the lunatics have taken over the asylum: the EU's racism watchdog recently suppressed a report on the rise of anti-semitism because it concluded that Muslims were behind many incidents. What sort of world do we live in, when racism is "allowed" to be reported only if it comes from the white and the right? What about a stubborn, shimmering little thing called truth?

I don't care who's doing it - white, brown or pink-and-purple paisley-patterned - if they're picking on the Red Sea Pedestrians, they're wrong 'uns, like all racists. Make no mistake, the Jews are not hated because of Israel; they are hated for their very modernity, mobility, lust for life and love of knowledge. Their most basic toast, "L'chaim!" (To Life!), is a red rag to those who fetishise death because they have failed to take any joy from their life on earth.

"Not our Jews! Leave our Jews alone! " yelled the locals who turned out to fight the Mosleyites in Cable Street. It may be politically incorrect to call this ancient people "ours", but what the hell: they're tough, they can take it. And they are still our Jews, in that if they are wiped out, in Israel or anywhere else, we will be wiped out, too, one day, all of the modern world and its achievements - swept back into the Dark Ages mulch from whence we came. The cry of Cable Street still rings true. Not our Jews! But, this time, "our" means mankind, and the very future of our species.