The document summarizes the key events surrounding the construction of the Berlin Wall in 1961. It notes that following World War 2, Berlin was divided between the Western Allies and Soviet Union. By 1961, many East Germans were fleeing to the West for political and economic reasons, which embarrassed the USSR. In response, the Soviet leader Khrushchev demanded the withdrawal of Western troops from Berlin. When Kennedy refused, the East Germans, with Soviet backing, erected the Berlin Wall overnight on August 13th 1961 to stem the flow of refugees. The Wall separated friends and families and resulted in over 100 deaths of people trying to cross over the years until it eventually fell in 1989.