Censorship in this funny is very funny. The term "Japs" was not even used in a derogatory manner, it was a hyperbolic statement used to prove a point. Language is a complex animal, but I hope people know a hyperbole when they read one :-\. That being said, I have a question. Why is it that people say "the N word" instead of just saying "######". It doesn't make any sense. Everyone knows what "N" is the first letter of in this context, you implied quite well WHAT that "N" is supposed to represent, and we're all adults here, why the circumvention? Can people read "the N word" but as soon as you actually spell it out they start foaming at the mouth and beating the ground bones, grunting and spitting like the beginning of "2001"?
As the late great George Carlin said about 15 years ago in response to political correctness in this country, "There is nothing wrong with words in and of themselves, it's the context. To some that may seem obvious, but it seems people must honestly still lack basic reading comprehension skills if the word "Jap" used in an a dry and academic context warrants a thread being closed.