The American perspective of communism as inherently evil is almost completely due to ideological bias. Communism is the antithesis to capitalism, the American and Western form of economy.

Communism is attributed to be a form of utopia. In fact, no "communist" nation has ever proclaimed themselves as communist, but tying to reach communism through socialism. True communism is defined (loosely) as the collective sharing of goods, wealth, and resources within a community (hence commune-ism) with dirrect government control of business and industry.

The biggest fault of communism is in its economics, not so much socially. Everybody being equal doesn't sound too bad, but when everyone gets the same reward for doing work, regardless of who works more, there is no incentive to go above and beyond or excell in the field or industry.

Example: if the government paid you and I both $20 to make 100 shoes, why should either of us try to make 101 shoes?

Tl;dr- Communism has never existed and fails economically.

I'm sorry, I've had to remove this question as it violates our rule against loaded questions. If you are still interested, you are welcome to edit your question for neutrality and re-submit it.