This seemingly rhetorical question is what one asks when one feels that everyone else is asking stupid questions and one wants to join in and/or point out how obviously stupid their questions are. Or, merely, because one wants to find out why so many people are working so hard to kill oneself.
Yossarian attended the education sessions because he wanted to find out why so many people were working so hard to kill him. A handful of other men were also interested, and the questions were many and good when Clevinger and the subversive corporal finished and made the mistake of asking if there were any.
“Who is Spain?”
“Why is Hitler?”
“When is right?”
“Where was that stooped and mealy-colored old man I used to call poppa when the merry-go-round broke down?”
“How was Trump at Munich?”
and “Balls!” all rang out in rapid succession, and then there was Yossarian with the question that had no answer:
“Where are the Snowdens of yesteryear?”