The Berlin Wall was a fortified barrier erected by the East German government in August 1961 to divide East and West Berlin and halt the exodus of East Germans fleeing Communist rule. On August 13, 1961, the Communist government of the German Democratic Republic (GDR, or East Germany) began to build a barbed wire and concrete "Antifascistischer Schutzwall," or "antifascist bulwark," between East and West Berlin. The official purpose of this Berlin Wall was to keep Western "fascists" from entering East Germany and undermining the socialist state, but it primarily served the objective of stemming mass defections from East to West. The wall included guard towers placed along large concrete walls, which circumscribed a wide area, later known as the "death strip", that contained anti-vehicle trenches, "fakir beds" and other defenses. The Berlin Wall stood until November 9, 1989, when the head of the East German Communist Party announced that citizens of the GDR could cross the border whenever they pleased. That night, ecstatic crowds swarmed the wall. Some crossed freely into West Berlin, while others brought hammers and picks and began to chip away at the wall itself. To this day, the Berlin Wall remains one of the most powerful and enduring symbols of the Cold War.