which is why it's an absolute waste of time trying to talk about them and the Labour Party during the Corbyn era on a US-dominated forum starting from the sort of groundbase of belief typified by your reply.
But to waste just a little of my time, right-wing factions within Labour weaponized a number of issues to muddy the name of Corbyn and the vast influx of supporters his time as leader brought the party, and literally worked to sabotage Labour's prospects in the run-up to the last election, and our media and yours lapped it up wholesale.
Some time spent on Google yourself would probably be more useful if you really want to understand the situation and its development, as the severely sceptical are unlikely to believe any I supply, but here's just a few:
London School of Economics study "Journalistic Representations of Jeremy Corbyn in the British Press": https://www.lse.ac.uk/media-and-communications/research/research-projects/representations-of-jeremy-corbyn
Media Reform Coalition report "Labour, Antisemitism and the News: A Disinformation Paradigm": https://www.mediareform.org.uk/wp-content/uploads/2018/09/Labour-anti-semitism-and-the-news-EXEC-SUM-FINAL-PROOFED.pdf
Scottish Daily Record: "Secret Scottish-based office led infowars attack on Labour and Jeremy Corbyn: Explosive leaked documents passed to the Sunday Mail reveal the organisation’s Integrity Initiative is funded with £2million of Foreign Office cash and run by military intelligence specialists": https://www.dailyrecord.co.uk/news/politics/foreign-office-funds-2m-infowars-13707574
Monthly Review report "Anatomy of a Propaganda Campaign: Jeremy Corbyn’s Political Assassination" (includes a section on the antisemitism accusations and the fact that Labour's record on that issue was no worse, and probably slightly better, than the Tories' and that of the general population, as has been borne out by a number of reputable academic studies): https://monthlyreview.org/2022/02/01/anatomy-of-a-propaganda-campaign-jeremy-corbyns-political-assassination/
For some sort of balance and a more or less Establishment overview, a BBC article: "A guide to Labour Party anti-Semitism claims": https://www.bbc.co.uk/news/uk-politics-45030552
I'm not a Labour supporter, BTW, haven't been for decades, and have a history of being critical of Corbyn on this board for my own reasons.
Whatever, what we're left with is a Labour Party under Starmer that's very vocally hell-bent on following the Tory Party down some very dark sociocultural holes (like its stance on immigration) and avoiding addressing some of the main issues that have made the UK such a disaster zone (particularly Brexit).
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