Today marks the centenary of World War I as millions of people up and down the country attend events in remembrance of Britain’s war dead. The decision to wear a poppy in tribute is a personal one, but many choose to instead wear the white poppy of peace or no poppy at all out of principle. Some public figures have been shamed for refusing to wear a poppy, but Jonny Smart argues it’s been used to fuel British nationalism and legitimise the continuation of imperialist foreign policies…