The real achievement we can celebrate is the fact that the 20th century marked the end of totalitarian ideologies, in particular those that were based on utopian beliefs.
Yet new ideologies are quickly replacing the old ones, both in the east and the west.
Many now forget that the fall of the Berlin wall was not the cause of global changes but to a great extent the consequence of deep, popular reform movements that started in the east, and the Soviet Union in particular. After decades of the Bolshevik experiment and the realization that this had led Soviet society down a historical blind alley, a strong impulse for democratic reform evolved in the form of Soviet perestroika, which was also available to the countries of eastern Europe.
But it was soon very clear that western capitalism, too, deprived of its old adversary and imagining itself the undisputed victor and incarnation of global progress, is at risk of leading western society and the rest of the world down another historical blind alley.