"you don't give the impression that you have read anything from the author that you are siting"Oh, ok. Anyways.
First section of Capital Vol I is all about "surplus value" and exploitation, with a heavy dose of the labour theory of value. It has nothing to do with "initial accumulation" at all, it's about ongoing extraction of surplus value in production, and no, Marx doesn't call it "theft" -- he calls it "exploitation" (which to him is actually somewhat of a value neutral world describing a technical process, actually).
Whether it's a defensible position in economics or philosophy is a whole other discussion. There's nuance.
Also I assuming you mean "citing", not "siting"