I spent a few minutes looking it up and now I feel bad for laughing at it. Here it is:

Hitler, Mussolini and Franco were having dinner together.

Mussolini: “What will your next move be?”

Hitler: “My plan is to kill six million jews and a clown.”

Franco: “But why a clown?”

Hitler turns to Mussolini and says: “See? Nobody cares about the jews.”