Read the Communist manifesto to get a good idea of its overall goals. I'm sure you can do a Google search for it. Some of the things I remember about it that stood out to me were the total abolishment of private property and making individuals completely subservient to the state.
Under Communism, everything an individual has belongs to the government, even the person's life. It does away completely with individualism in favor of collectivist crap. Under communism, the government controls everything and can seize anything and everything anyone owns for the so-called "collective good" with no compensation to the individual who had his or her stuff stolen by the state.
It's an abhorrent ideology, government and economic system. Like I said, read the communist Manifesto to get a better understanding. I believe it's pretty short from what I remember and, iirc, it was written by Karl Marx (someone who pooty/whirly idolizes lol).
Edit: another thing, individuals have no right to privacy under communism either. In fact, individual rights are done away with entirely. The government may allow you to have the illusion that you have certain rights but those can be stripped away at a moment's notice if the government deems it necessary or beneficial to the state.