SPECIAL TO IN DEFENSE OF COMMUNISM.
First of all, let us say that the proper phrase is "under Socialism". During the 20th century, the Soviet Union and the socialist countries of Eastern Europe were in the process of socialist construction. According to the Marxist-Leninist theory, "Socialism" consist the first stage (phase) of Communism.
Having said the above, let's go to the core issue. The people who have lived both under Socialism and Capitalism give their answer to the various bourgeois and petty bourgeois unhistorical slanders. Various polls in former Socialist countries prove that the majority of people, in Russia and Eastern Europe, think that life was better before the counter-revolutions and the restoration of Capitalism. Under Socialism their major problems had been solved: Free education, free healthcare for all, social security, jobs, free vacation and holidays for everyone, etc. The restoration of Capitalism brought an unprecedented barbarity in almost every sector of public life: Social inequalities, unemployment, privatization of major public sectors from healthcare to education, etc.