Sentence:  Upon the other hand, there are a great many people who, having no private property of their own, and being always on the brink of sheer starvation, are compelled to do the work of beasts of burden, to do work that is quite uncongenial to them, and to which they are forced by the <WSD>peremptory</WSD>, unreasonable, degrading Tyranny of want. 
Meaning of the word marked with <WSD> tags:  Accepting no refusal or disagreement; imperious, dictatorial.