GDR authorities officially referred to the Berlin Wall as the Anti-Fascist Protection Rampart (). The West Berlin city government sometimes referred to it as the "Wall of Shame", a term coined by mayor Willy Brandt in reference to the Wall's restriction on freedom of movement. Along with the separate and much longer Inner German border (IGB), which demarcated the border between East and West Germany, it came to physically symbolize the "Iron Curtain" that separated Western Europe and the Eastern Bloc during the Cold War.