By taking their concerns about antisemitism and treating the issue like an actual piece of rubbish - by throwing it on the floor.
Mr Corbyn promoted this video on his own Facebook, YouTube and Twitter accounts.
He is backing himself into a corner. No longer will his claims to oppose hatred of Jews be allowed to stand, when it is the Labour leader himself propagating the abuse.
Mr Corbyn's direct role cannot be ignored. This is the disgusting truth.
