Berlin, Germany, 19th November, 1961, East Berlin border guards adding barbed wire to the newly built Berlin Wall, The wall was set up the Soviet army to prevent refugees escaping from the Soviet sector in the East to West Berlin [Getty Images]

Berlin, Germany, 19th November, 1961, East Berlin border guards adding barbed wire to the newly built Berlin Wall, The wall was set up the Soviet army to prevent refugees escaping from the Soviet sector in the East to West Berlin (Photo by Popperfoto via Getty Images/Getty Images)