Earlier quoted context omitted.
That's very strange for me to hear, considering the position of the author himself and some of the views espoused in the book. Though I shouldn't be saying that books ought to be restricted to certain ideological followers. As a Communist myself I have my own favourites but I doubt they'd be so useful to anyone here.
I'm definitely pro-capitalism personally, but I think a collection of books that offer a convincing argument towards another perspective would be well received in the HN community. You should consider posting some.
In light of that, a thoughtful and reasonable look at alternatives is the best way to reduce some of that contention.