A simple test

Here’s a guide for politicians on how to handle ethnic humor in the United States of America in 2016:

Question: Is it OK to tell a joke making fun of some purported characteristic of an ethnic group, or other suspect classification, if you are not a member of the group in question?

Answer: No.

(I seem to remember that Polish jokes were a regular feature of Johnny Carson’s monologue in the 1970s. That was before liberal fascism though).