Too bad I abstain from this vote. Although technically yes only because some Americans do know, but I'd say the majority don't know a thing. It's rather those alive from Cold War era that believe in American propaganda, or a bunch of kids who end up being brainwashed or braindead about the topic. All depends which one comes first. If none of the stated then they know what Communism is! P.S. Brainwash meaning education taught them wrong or the parents are patriotic for America (probably through Cold War) hence children suffer from this.
I had a kid tell me communism was a bad thing because of what Stalin was doing to his people... How are they correlated again..? Last I checked, the idea of Communism was not written as "Stalin did it."