“...it should be pointed out that socialism and fascism do not free you of an oligarchy, they in fact create an oligarchy. In some cases replacing the old one, in some cases its the old one in new guise.”
“It is obvious what the fraudulent issue of fascism versus communism accomplishes: it sets up, as opposites, two variants of the same political system; it eliminates the possibility of considering capitalism; it switches the choice of “Freedom or dictatorship?” into “Which kind of dictatorship?”—thus establishing dictatorship as an inevitable fact and offering only a choice of rulers. The choice—according to the proponents of that fraud—is: a dictatorship of the rich (fascism) or a dictatorship of the poor (communism).” - Ayn Rand
"It's a choice between A and B -- and I get to decide what A and B are."
A Hugo Chavez, for example, is a Marxist. And a Fascist. At the same time, and I don't think its even possible to separate these elements.
As a practical matter, they go together. You might be able to separate between them in the laboratory, but as you find them in nature they are a single animal.