A Russian Middle Class Citizens View on World War II

From what I can understand, our leader, Joseph Stalin (who doesn't seem to be the nicest man, especially to his own people) had decided to sign a pact with that Hitler man.  Despite this, our beautiful country has once again been invaded.   With the strength of our people, and the harsh weather conditions we defeated those Nazis and forced them to leave our precious Russia.  You would think that people would learn that after this plan failed once, they would not use it again, however this was not the case.  Anyway, we are now in the midst of war which is threatening to my family for my son will soon be asked to go fight.  There is also talk about an idea called communism.  While I am not quite sure what this is, Mr. Stalin makes it sound like a beneficial plan that will make our country grow and be the largest super-power in the world.  What is so wrong with that?