Supporters of the far right National Democratic Party of Germany (NPD), the populist Baergida movement and Buergerbuendnis Havelland (a citizen's group) march in memory of the terror attack at the Breitscheidtplatz Christmas market. Anis Amri, a Tunisian Islamist radical, drove a stolen truck through crowds of visitors at the market on 19 December 2016 killing 12 people and injured 50.