ok, I have to explain it again:

In my mind neither the Schindler joke nor the Irishman joke are racist.
Only according to Jims initial statement (second post of this thread) they are.

As Jim stated later on: "Racist humour is designed to take the piss out of entire races or ethnic communities by presenting them a stereotypically, dirty, stupid, dishonest, treacherous..... In the case of Irish jokes, stupidity and cultural backwardness is the recurring theme2". This also doesn´t apply to the thread-opening joke - on the contrary, the Irishman in question gives the policeman a clever answer.

Did anyone understand the irony in my first post?