Time to re-read the late lamented Professor Norman Geras's post here on "Alibi Antisemitism".
Here's the merest taster:
"In Marx's essay On the Jewish Question, written in 1844, there are two contrasting sets of themes vis-à-vis the Jews. In Part II of the essay Marx deploys some well-known negative stereotypes, according to which: the mundane basis of Judaism is self-interest, egoism, or, as Marx also calls it, 'an anti-social element'; the worldly religion of the Jew is huckstering; and the Jew's jealous god – 'in face of which no other god may exist' – is money.
The emancipation of the Jews is said by him to be equivalent to the emancipation of mankind from Judaism. Part I, on the other hand, presents a version of secular democracy in which the Jews, like any religious or other particularistic grouping, may retain their religion and their separate identity consistently with the state itself rising above such particularisms, and rendering these politically irrelevant.
[Continues Prof Geras:]
At the same time, that affinity has now been compromised by the existence of a new climate of anti-Semitic opinion within the left. This climate of opinion affects a section of the left only, and not the whole of it. But it is a substantial section. Its convenient alibi is the state of Israel – by which I mean that Israel is standardly invoked to deflect the charge that there is anything of anti-Semitism at work. Israel, so the story goes, is a delinquent state and, for many of those who regard it so, a non-legitimate one – colonialist, imperialist, vehicle of oppression and what have you.
Similarly, diaspora Jews who defend Israel within their home countries are not seen as the conduit of Jewish interests and/or opinion in the normal way of any other democratic articulation; they are treated, rather, as a dubious force – the notorious 'Jewish lobby' – as if their organized existence were somehow improper.
To repeat: Israel has been made an alibi for a new climate of anti-Semitism on the left." [Emphasis added]
(All tweets pictured above are current ones.) For Corbyn's eyeroll see here