Corbyn both shared and appeared in the video claiming the United States trained dogs to sexually attack women.
The mosque had previously hosted an Egyptian imam who pledged to “liberate” Al-Aqsa mosque in Jerusalem from the “filth of the Jews.”
Polanski, who grew up in northern England and is currently a member of the London Assembly, is the first Jewish deputy leader of the Green Party.
Corbyn was plagued by allegations for years that he allowed antisemitism among Labour members, leading several prominent Jewish politicians to leave the party.
UK Labour leader Keir Starmer makes a definitive effort to purge antisemitism from the party and announces that Jeremy Corbyn will not stand as their candidate in the next election.
The UK Peoples Assembly group has unanimously voted that antisemitism claims were falsely made to prevent Jeremy Corbyn from gaining power.