God is a Mass Murderer

[Agnostico]

Let me add, Communism isn't about oppressing religion, but any kind of dissent. There are Christian Churches in Russia, and even China, and Cuba has tons of Catholic Churches.

That's a good point. Any kind of dissent is either taken to the gulag or disappears

I recently found myself asking what the difference is between the communist and socialist economic structures
What I found is that we use the terms incorrectly, especially communism. There has never really been a communist country even though thats what we called the old Russians. Some dictionary definitions also has things mixed up

In a capitalist society the big money industries are owned by private entities

In a socialist society the big money industries are owned by the state

Communism is a Marx concept of a utopia. It says that the public have equal shares in companies whose profits are equally divided
Eg. A company has 100 employees. They all have an equal share in the company and earn an equal slice of the profit. 
Weather or not it could ever work is an interesting discussion

Then there is fascism. Its sits on the right hand side of the political spectrum which i don't really understand why
It's economical structure is the same as socialism with the state owning the big industries. So is it a form of socialism
I heard someone say "socialism is when the state dominates industry and Fascism is when industry dominates the state"
I don't really see much ideological differences either, both are very nationalist. Maybe someone here can better explain the differences between fascism and socialism

These are very basic definitions as the subject gets really complex