Whittaker Chambers was one of the greatest "witnesses"
-- both literally and morally -- against communism.
"Witness," written in the early 1950s, is the unforgettable and immensely readable story of his political and spiritual odyssey into, and then away from, communism. It is also the story of the Alger Hiss case, the exposure of a communist spy in the U.S. government. Most conservative intellectuals over the age of 50 or 60 have probably read "Witness." At the time it came out, many other people read it too. It is a book anyone sufficiently interested can read. It is guaranteed to give you greater insight into not only the history of the 20th century, but also the struggle against nihilism, relativism, and collectivist liberalism in which we are engaged.
Chambers made it very clear that communism was simply one variety of a much broader and deeper challenge.
I think that all too many conservatives miss what you picked up; communism was but a part of a much larger problem.
On a more prosaic level, communism was the radical expression of trends well in play within the modern, Enlightenment West.
Chambers knew it, but I fear that too few realize what he was talking about.