I remember back in elementary school, in the 1950s, we students had a rich variety of racist and homophobic jokes. (This was in addition to a constant crop of fart and booger jokes.) I’m not remembering the content of the actual jokes right now.…probably a blessing… but I do remember the structure.
Q. Why did the ____________ [pick random ethnic group] do such-and-such dumb thing________________ ?
The point of the the joke was that it made fun of whatever ethnic group that came to mind, hopefully without getting me beaten up by the huge Italian guy as I try out another “Wop” joke.