Nietzsche

Fascism is a political philosophy, typically considered far right-wing but with some interesting left-wing elements.

Communism is an economic philosophy that is typically considered far left-wing.

Authoritarianism is a form of government based mainly upon extreme power exercised by the government with limited to no recourse for the people.

Historically, countries that have been Fascist or Communist have wound up having Authoritarian governments.

Anti-authoritarianism is a belief that communities should have a right to govern themselves and not to be ruled by an outside force.

There are four broad classifications of authoritarianism: traditional authoritarianism, military authoritarianism, one-party authoritarianism, and personalistic authoritarianism. Traditional authoritarianism is based on traditional political structures and practices, while military authoritarianism is characterized by military rule. One-party authoritarianism is where a single political party holds all power, and personalistic authoritarianism revolves around a single leader who dominates the political landscape.

It is mainly right wing, but there are eurosceptics who are left wing too.