From Objectivism Wiki
Totalitarianism describes a form of government where the state exercises absolute political and social control over most or all aspects of public and private behavior; there is no regard for individualism; and political opposition is typically subject to violent or arbitrary repression.
"There are four characteristics which brand a country unmistakably as a dictatorship: one-party rule- executions without trial or with a mock trial, for political offenses- the nationalization or expropriation of private property- and censorship. A country guilty of these outrages forfeits any moral prerogatives, any claim to national rights or sovereignty, and becomes an outlaw."-- Ayn Rand