What does totalitarianism mean?

It is a system of governance in which just one political party is allowed, and that one party totally controls the lives of its citizens. Dissent is not allowed, and protest is severely punished. Some examples of totalitarian rule are Stalinism, Eastern European Socialism (which was the prevailing system in Poland, Hungary, Bulgaria, Romania, Yugoslavia and Communism in the the Soviet Union until 1989), and of course, Nazism under Adolph Hitler. There are also modern rules who have ruled in a totalitarian style-- such rulers are usually autocratic dictators like Cambodia's Pol Pot or Iraq's Saddam Hussein. China, North Korea and Cuba are also totalitarian states -at present.
one political group having complete control of the government