What is a real world example of communism?

China, North Korea, Vietnam, Cuba, Kenya, the Soviet Union ( now disolved), Yugoslavia (now disolved into Bosnia and Herzegovina, Serbia, Kosovo, Croatia, Macedonia, and Montenegro), Jamestowns original government which failed and was replaced with a free trade republicesque government, And many more that do the same basic thing but are called by other names or that i don't know about. Note: Kenya might not be a communist state anymore I am not sure.