The classic battle between the parasites and the productive, yes.
Actually, while discussing this, I remembered that there is one more level to this. It's the classic battle between the parasites and the productive, which stems from the battle between the Marxists who think the pie is only so big, and capitalists who think the pie can expand.
The parasites believe that there is only so much wealth in the world (limited size "wealth pie"), and the wealthy have most of it, so the only way for others to have wealth is to take the piece of the pie from the wealthy. The productive have witnessed how their own wealth was created largely out of nothing, without taking anyone else's wealth by force, and thus believe that the amount of wealth in the world isn't really limited, and the "wealth pie" can just get bigger, expanding to give more pieces to those who work for it.
Man, Marx has really infected the collective human mind with one hell of a viral parasitic thought
(P.S. I knew this before, especially since this concept was described in detail at my "evil, liberal brainwashing, public university, but I often forget about it, and mainly described the "pie" in detail to those who aren't familiar with the concept yet)
Last time I checked, we have only one pie called planet earth and some of it is renewable and some of it is not. So just there is a valid discussion about how the pie is divided.
What a concise way of summing it all up. Of course, myrkul will argue that there's the whole Universe, as if we can count on cheap space travel soon, and everyone's content to live on Mars or in orbit around Jupiter.
There is a thread here entitled 'Greed'. I wrote a post in it. A lot of libertarians are just plain ignorant of why people rail against them because they have false assumptions about our planet - mostly they simplify the complexity of the foundations of our existence. This is the post, which was in reply to some ridiculous assumptions by posters above me: https://bitcointalk.org/index.php?topic=97243.msg1073879#msg1073879