Signs of a Communist System

Communist systems have a few easily identifiable signs. The most obvious is that instead of a market economy, they have a command economy. For some reason, agriculture is almost always untouched and is even allowed to be run privately, but almost every other industry is kept under strict state control. Prices and quotas are set by the government, and people's careers are controlled by them too. This makes it so you have to listen to the communist system since the government is the only employer and you won't have a job if you don't obey.