From the language you use, I suspect you are a USAian; the term "leftist" seems to be used mainly as a term USAians use to express their contempt for socialism. In most of the world, "socialism" is not a bad word. But the term "leftist" is often used by authoritarians to describe the "terrorists" they're using the army to suppress.
I'm ok with socialism when it's done consensually. If a bunch of people want to go live on a commune, more power to them. It's when you come for the equipment and capital I use to manufacture things and feed my family, is when you're gonna start needing the commune comrades to enact violence if you want to steal that from me. And to do that seems.... coercive and non-anarchistic.
