Childhood memories

My first memory of USA is this: Sometimes in the 1960:ies when I was a child I saw on television how an American soldier in Vietnam forced a young man, almost a child, down on his knees. Then he shoot the man/child in the head. My mother tried to explane to me that the man was American, and they are evil, but we do not have Americans in Finland.
Even to day the real American drem is to becom a soldier and go to a foreign country to rape and kill innocent people.