While all wars would be better never started the fact is that when a war comes along jokes will be made , my grandfather was a political cartoonist with a national newspaper , he in effect earned part of his wages from drawing caricatures of Hitler ,Stalin ,etc.
He was gassed with mustard gas in the first world war by the way.(And I am very afraid that Putin has something a lot worse that that in store as he showed in Syria.)
God help us .
While you might not think anything or think a joke is in poor taste its a quite a british thing to mock an enemy look at the jokes about Hitler we still find funny like that episode of faulty towers(so loved by the germans as well, funny enough.)
To laugh at something that scares us makes us somehow feel better