1989 brought the overthrow and attempted overthrow of a number of governments led by communist parties, such as in Hungary, the Tiananmen Square protests of 1989 in China, the Czechoslovak "Velvet Revolution", Erich Honecker's East German regime, Poland's Soviet-backed government, and the violent overthrow of the Nicolae Ceaușescu regime in Romania. Destruction of the 155-km Berlin Wall, at the end of the decade, signalled a seismic geopolitical shift. The Cold War ended in the early 1990s with the successful Reunification of Germany and the USSR's demise after the August Coup of 1991.