while the fact that Wikipedia is open is true, this particular statement is cited and sourced. take a look at the citations instead of writing off something because you simply disagree with it. also, historians pretty much agree that Mussolini was right wing. Here's another source: https://www.history.com/this-day-in-...-fascist-party

"Benito Mussolini, an Italian World War I veteran and publisher of Socialist newspapers, breaks with the Italian Socialists and establishes the nationalist Fasci di Combattimento, named after the Italian peasant revolutionaries, or “Fighting Bands,” from the 19th century. Commonly known as the Fascist Party, Mussolini’s new right-wing organization advocated Italian nationalism, had black shirts for uniforms, and launched a program of terrorism and intimidation against its leftist opponents."

If you can show me a source which supports the idea Mussolini's regime was left-wing, I'm all ears.

In any case, the whole right-wing v left-wing dichotomy doesn't really work when you look at history. applying contemporary ideas about the right v left political spectrum in the US to the past doesn't really work or give the full picture. things are more complicated than just liberal vs conservative.

I do think it's asinine though to say that fascism is exclusively a product of the left wing. there have certainly been instances of left wing totalitarian regimes that committed horrible atrocities, but, for any learned political scientist or historian, fascism is almost exclusively the extreme right wing's flavor of totalitarianism.