1) A totalitarian form of government in which the People form a union where there is no individualism or self-advancement in classes, as there are no classes. Society advances and benefits as a whole. "Invented" by humans back in the Stone Age, but made more sophisticated by Karl Marx around the time of the 1848 Revolutions in Europe.
2) A Revolutionary ideal often represented by the notorious Cuban Revolutionary Ernesto "Che" Guevara on t-shirts. The people who wear these shirts often have no idea what Communism is really about, have never read a single book about it, and just want to be nonconformist by wearing the said shirt or claiming to be under such a revolutionary ideal.
Notes: No powerful country has ever respected Communism. Communism is often used as the fuel for a Revolution, but is never used the the form of government once the Revolution has taken place.
Communism does not support there being no government, quite the opposite. It supports a Totalitarian form of rule. Anarchy is the ideal of no government and that the wellbeing of the People is based entirely on their conscience.
1- Communism is the purest somewhat form of economy we can have.
2- Look at that guy who supports Communism, he sure does look like a fag.