The question below pongs of antisemitism and was rightly closed.
Are there any kernels of truth in the Jewish story of Purim?
Currently we have a policy which spells out that any Holocaust-related questions have to be irreproachably on-topic or they'll be closed. This has been quite effective, as far as I can tell, in preventing Holocaust denial from being pushed in ordinary users' faces. The same policy applies to all ww2 and Nazi questions.
The question linked doesn't ask about any of those topics, but does try to smuggle in antisemitic libels. Whatever deeply tedious person keeps making new accounts to push racist crap is not going to stop doing it. But we don't have to make it easy. I think we should broaden the policy to include any question relating to Jews.
Do you?