If you want to outline the numerous failures of ideological and economic socialism, just name any socialist nation and you are sure to uncover an endless supply of examples. In fact, many countries where socialism is not total but making considerable inroads often suffer from severe decline — the U.S. being one of them. Whatever socialism touches it destroys, because forced interdependency does not work. It is a broken concept with no large scale successes (this includes China, which suffers from considerable poverty and a totalitarian government despite it being the most successful garbage economy out of a host of other garbage economies). Yet, proponents of socialism keep trying again and again claiming that "this time is different."
So ample have been socialism's failures in the past several years that socialists have resorted to a classic blame game in order to maintain the delusion.