Careful about stuff like this. The word "oligarch" always presents some liberal conditions by distancing the fundamental issue of private property from attention. Middle-class people are integral to this system because they have a vested material interest in maintaining property as well as the violence necessary for it to exist; they aren't "oligarchs" any more than the thousands of multi-millionaires are.

It is also contradictory to socialism to attribute systemic inequities exclusively to the actions of select individuals, not a system of power organized around property.

Edit: I'm seriously disappointed by the amount of uneducated mansplaining going on here, I won't be responding to any more comments from this community.