What socialism, fascism and other ideologies of the left have in common is an assumption that some very wise people—like themselves—need to take decisions out of the hands of lesser people, like the rest of us, and impose those decisions by government fiat.
NOTE: "Fascism is a form of far-right, authoritarian ultranationalism characterized by dictatorial power, forcible suppression of opposition, and strong regimentation of society and of the economy which came to prominence in early 20th-century Europe."