The Simon Wiesenthal Centre, one of the largest international Jewish human rights organisations, said the prince should attend a ceremony at Auschwitz later this month to mark the 60th anniversary of the death camp's liberation by allied troops. In a strongly worded rebuke, the US-based centre added: 'This was a shameful act, displaying insensitivity for the victims, not just for those soldiers of his own country who gave their lives to defeat Nazism but to the Holocaust victims.'