Why so serious? An inquiry on racist jokes.

First, racial jokes are jokes about various aspects of race or race-related issues, where a joke's punch line crucially depends on or involves those issues. In fact, replacing "black" with "white", "Chinese", or "Latino" would not effectively make the joke a different one.[5] Thus, including a racial reference in a joke is not sufficient for making it a racial joke; either the joke must express a racial stereotype or the racial reference must in some way be crucial to understanding the joke. I am making a minimal assumption, that joke-utterance tokens can be distinguished from joke-utterance types. In fact, if you wish to preserve the underlying intuition that who tells a joke can impact how we determine the moral character of that joke, then you should prefer an utterance-specific account of jokes over one that assumes there is a joke type of which jokers token instances. [Extracted from the article]