Two beggars are sitting side-by-side on a street corner in Boston. One has a cross in front of him and the other one has the Magen David, the Star of David. Many people go by, look at both beggars, but only put money in the hat of the beggar sitting behind the cross.
A priest comes by, stops and watches as throngs of people give money to the beggar behind the cross...but none to the beggar behind the Star of David. Finally, exasperated, the priest goes over to the beggar sitting behind the Magen David and says: "My poor fellow, don't you understand? This is a Catholic city. People aren't going to give you money of you sit there with a Star of David in front of you...especially when you're sitting beside someone who has a cross in front of him. In fact, they will probably give more to him just out of spite."
The beggar with the Magen David then turns to the other beggar with the cross and says: "Jerry, look who's trying to teach the Silverman brothers about marketing."