Is it ironic that...

Zora Cejnkovas Programme 'Holiday in the Czech Protectorate' was attacked because it wasnt a holiday. When explained that it was ironic like the title of Remarque's 'In Western Nichts Neues' known as 'All quiet on the Western Front' the caller said it was really Quiet. I would be interested to know what percentage of people dont 'get' irony