Gerard Henderson is crackers. This is the only conclusion one can reach from his increasingly bizarre attacks on The Spectator Australia. As with all matters Henderson, this dispute started innocuously enough.

In early January, Henderson wrote  a column in the Sydney Morning  Herald describing his Christmas Day. Instead of playing with his grandchildren, who had to fend for themselves ‘at the beach in shallow water’, Gerard ‘with earpiece attached, switched on the ABC Radio National Artworks program’ and began scribbling notes of condemnation.