Communism is an evil ideology bred out of envy, feeling that everyone has the right to other people's possessions. I don't know where you live in the world, but it is an ideology completely and absolutely antithetical to the principles of the United States. There was a time during the McCarthy Era when being (properly) labeled as a communist would essentially blackball you from civilized society. We need those days back. It is such an evil and destructive and fundamentally anti-American system, that in my opinion, anyone associated with a communist or socialist party in the U.S. should be forever banned for the remainder of their life from serving in any position of public trust, including but not limited to any elected office at a Federal, State, or Local level, any government agency, or any government supported educational institution including all public schools, colleges, and universities. You mention you're not talking about places like North Korea or the USSR, but I am. Add in Cuba, Vietnam, Cambodia, Laos, Venezuela... the fact that those countries end up in brutal dictatorship and are also communist/socialist/Marxist regimes is no coincidence. It is the inevitable result of the belief that people do not have the right to their own property, ideas, and wealth. Is that enough of an answer?