Thanks for your comment.  The same post got rejected the first time as "uncivil."  To me, that implies abusive toward other participants in the discussion, which my post isn't.  Your word "insensitive" is better, since making any joke about a tragedy is going to have a shocking effect.  But it really wasn't "insensitive," either, because I intended it to shock.  Jocularity is a timeless reaction to tragedy.  You can find it in Greek tragedy (e.g., Prometheus Bound).  Jonathan Swift's "A Modest Proposal" is a classic of the genre.  For contemporary examples, watch some of Quentin Tarantino's movies.