I wonder if anyone ever said "Democracy would never work, just look at what happened to Athens".
Socialism and communism are relatively new ideas. While I don't believe communism is an effective form of government, it's still kind of silly to write it off so quickly.
There is a poem in Polish, it goes in fast and dirty translation: "Today you scare us with communists, just as years ago, you scared our fathers with the democrat name".
Someone between 1804 and 1830: Democracy doesn't work, just look at France, it dissolves into an empire
Seeing some of the zingers in the comments here, now seems like a great time to plug my "Read Theory, Darn it!" introductory Marxist-Leninist reading list. Read up, comrades!