What year was this photograph taken? Study it, then reveal the answer below — or play it as a round and see how much HP you keep.
A U.S. tank crew stands guard at Checkpoint Charlie in West Berlin in 1961 during one of several standoffs between U.S. personnel and East German police that year. The sign in the upper right of the photo bears the famous remark made by Walter Ulbricht, General Secretary of the Socialist Unity Party of Germany on June 15, 1961: "Niemand hat die Absicht, eine Mauer zu errichten" -- "Nobody has any