Well I think we can wait for the Equality and Human Rights Commission to rule on whether or not Labour is antisemitic. There must be grounds for intiating an enquiry, these things do not happen wily nilly. Furthermore for fully one third of Labour MPs are calling for the removal of the whip from Mr Williamson leads one to believe they feel there are some grounds for the accusation.(which is simply one of many) And let us not forget that compo has put himself in some rather exposed positions for him to be whiter than white.
1)May 17, 2019 - Hamas, the militant Palestinian terror group, praised Labour leader Jeremy Corbyn for his support of an anti-Israel rally last Sunday in central London
2)The British Labour Party faced fresh accusations of anti-Semitism amid reports that leader Jeremy Corbyn accused Britain of “conceding to Zionist forces” in allowing the creation of the State of Israel.

Corbyn allegedly made the comments in a 2011 pamphlet, written by Labour MPs Sir Gerald Kaufman and Michael Connarty, after a trip to Palestinian refugee camps in Lebanon.

The chucklebutty report was a farcical whitewash, hence the case being taken up by the EHRC (one hack describes the report as a cynical disgrace

Jeremy Corbyn is more than just a dimwit over antisemitism
"The Labour leader’s political prejudices – against American ‘imperialism’, Nato as an ‘occupying force’, about international finance capitalism, for Hezbollah and Hamas – are just fanning out, or feeding into, one unifying theme: an unacknowledged antisemitism"

Poor old compo has also been labelled a security risk and has wargamed for a total collapse of sterling should he ever become PM. That you could not make up!