https://en.wikipedia.org/wiki/1954_Guatemalan_coup_d'état

The CIA destroyed a democracy that was empowering the people partially out of fear of communism and partially because the United Fruit Company (now Chiquita, aka basically the only company that sells all of the bananas) wouldn't have been able to exploit the labor as effectively.

This is only one example of what looks like a very beneficial communist country coming into power and, having almost no ethical issues, being destroyed by the US. This is not a country people point to about communism being evil, obviously. The issue is the only ones that can survive the US intervention need to be much stronger. This almost requires a central dictatorship, and possibly cultural hegemony. I'm not saying these are good things. I'm saying survivorship bias has made you think it's the way things need to be, which isn't true but is useful for capitalists to tell you.

Edit to add: The dictatorship that followed (which the US didn't oppose because it supported their economic interests) committed a genocide of the Mayan people.