"The more stories like this emerge, and the greater the suspicion that the current Labour leadership is unwilling or unable to tackle or even recognize what contemporary antisemitism looks like, the greater the perception will become that, as it stands, the party is a toxic environment for Jews."

ZFUK is not the only organization voicing harsh criticism of Labour's handling of antisemitism in the party.

Jonathan Sacerdoti, director of communications at the Campaign Against Antisemitism, said in a statement that Labour's "constant stream of controversy and scandal…further erodes the trust of all reasonable Britons in the party itself."

"Weak cover stories, half excuses, support from and for extremists, power and honor being handed to those covering up antisemitism, and now money being donated by terrorist sympathizers and supporters; there can be no question that this is being misread or spun by a specific interest group," he said.

Antisemitic Fringe in Labour Emboldened by Rise of Jeremy Corbyn