Fascism

 Fascism's extreme authoritarianism and nationalism often manifest as a belief in racial purity or a master race, usually blended with some variant of racism or discrimination against a demonized "Other", such as Jews, homosexuals, ethnic minorities or immigrants.

A fascist is someone who supports or promotes fascism—a system of government led by a dictator who typically rules by forcefully and often violently suppressing opposition and criticism, controlling all industry and commerce, and promoting nationalism and often racism.