It is not just that it is profoundly offensive to the leaders and people of a democratic Germany to paint Hitler on the wall (or on the remnants of the Wall). It is also consummately counterproductive. Such sauce does not make the meat of substantive criticism more interesting. It means that the whole dish is pushed away. It does not mean that Britain's voice is listened to more attentively in the councils of Europe. It means that it is listened to even less.