If the government has complete and absolute power over the people, that's totalitarianism. This is a repressive, unfree type of society.

We live in a democracy, where the people have a say and elect officials. The opposite is totalitarianism: a totalitarian society is usually ruled by a dictator, and there is very little or no freedom. In totalitarianism, the government controls almost every aspect of life. There is no free speech or freedom of the press: certain religions and ideas may be banned. George Orwell's novel 1984 was a brilliant look at a world of totalitarianism.

Definitions of totalitarianism

n a form of government in which the ruler is an absolute dictator (not restricted by a constitution or laws or opposition etc.)

Caesarism, Stalinism, absolutism, authoritarianism, despotism, dictatorship, monocracy, one-man rule, shogunate, tyranny
police state
a country that maintains repressive control over the people by means of police (especially secret police)
Type of:
autarchy, autocracy
a political system governed by a single individual

n the principle of complete and unrestricted power in government

absolutism, totalism
Type of:
ideology, political orientation, political theory
an orientation that characterizes the thinking of a group or nation