Your Jewish friend, for example, has given a very good reason for why jokes about Jews by non-Jews are generally offensive By way of conversation, not argument

Your Jewish friend, for example, has given a very good reason for why jokes about Jews by non-Jews are generally offensive By way of conversation, not argument, I will share that at the time, her explanation was unsatisfying. I felt that she was saying "You Can't Say That" arbitrarily. Why was it ok for one person to tell that joke and not another? I didn't feel she was explaining the reasoning behind the rule, just telling me the rule. But time has passed, and now I understand that a joke about cultural stereotypes often means one thing when told by an outsider, another thing when told by an insider to an outsider, and a third thing when told by an insider to another insider. And of course, outsiders are sometimes oblivious to the nuances.