To start off with, Communism isn't a political system, it's an economic one. The polar opposite of Communism is Capitalism. Socialism is the political equivalent to communism, but no country in the world has ever come close to the purest definition of it, as it centers around the public working for the country, as opposed to the opposite. (and no, the Soviet Union was not a Socialist country, neither is China. Both are dictatorships)
That said, What communism means is an equal distribution of wealth and resources amongst all the population, regardless of social or political standing. At it's purest form, it would work perfectly, as everyone would contribute equally and receive equally. In practice however it fails, because such a system requires that the entirety of the public is willing to retain their personal status and not try for their own purpose. Considering that it's unlikely even in a small scale, it renders communism inherently flawed.
The purest definition of Capitalism would fail in much the same way, as it's goals are personal success at the expense of all others. Left unchecked, you would find a situation akin to what you see in Highlander. (aka there can be only one) Why capitalism succeeds more than communism is because capitalism focuses more on the selfish nature of mankind while communism relies on working together.
That said, What communism means is an equal distribution of wealth and resources amongst all the population, regardless of social or political standing. At it's purest form, it would work perfectly, as everyone would contribute equally and receive equally. In practice however it fails, because such a system requires that the entirety of the public is willing to retain their personal status and not try for their own purpose. Considering that it's unlikely even in a small scale, it renders communism inherently flawed.
The purest definition of Capitalism would fail in much the same way, as it's goals are personal success at the expense of all others. Left unchecked, you would find a situation akin to what you see in Highlander. (aka there can be only one) Why capitalism succeeds more than communism is because capitalism focuses more on the selfish nature of mankind while communism relies on working together.