CHANGE: Until today, I was a Jewish member of the Labour party.

There has always been anti-Semitism on the far left. As a student, demonstrating during the build-up to the Iraq War, I saw it on protests, at rallies, in political meetings. The way everything would somehow slide towards a debate about Israel, the comments about Jewish influence, about how many Jews were in the media.

It was surreal—but it was a fringe. Since Jeremy Corbyn became leader, the fringe has entered the party’s upper echelons. And the explanations and the excuses have racked up. Don’t worry, nobody even knows who Jackie Walker is. That’s just Ken, he’s being an idiot. That’s just Christine Shawcroft, she’s an idiot too. Look, it’s just a few random councillors. I know, there are loads of #JC4PM-types saying some pretty nasty stuff—but who knows if they’re even party members. The mural comment looks bad, yes, but it was a long time ago and he’s apologised now. The code—well the thing about the code is you have to see both sides…

Until last week I’d never heard of the IHRA code. Being Jewish, I didn’t need a definition of anti-Semitism. I’ve read it now, like most of us have, and there are lines here and there which I might take issue with. Among Jewish friends and family I’d happily debate it. But no, not with you. Not here in public. Not in 280 characters.

Parsing the code is irrelevant. The only thing that matters is this: the Labour party will not allow Jews to define anti-Jewish discrimination.

There are more votes to be won amongst Britain’s (mostly recently imported) antisemites.