A policeman with a machine gun stands guard in front of the Kaiser-Wilhelm-Gedaechtniskirche memorial church with the Christmas market on Breitscheidplatz square in Berlin, Germany, 21 December 2019. A suspicious object was found and the Christmas market evacuated afterwards. In 2016, the place was the target of a terror attack in which 12 people died. (Photo by Clemens Bilan/EPA/EFE)
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