For a fascinating look at the current, self-labeled “conservative” mindset, go read this page:
Ten Most Harmful Books of the 19th and 20th Centuries
I would not dispute that both The Communist Manifesto and Mein Kampf belong on this list, but read some of the descriptions of the other books on the list.
Once you have digested that information, then observe these “honorable mentions”:
Origin of the Species
by Charles Darwin
Coming of Age in Samoa
by Margaret Mead
Introduction to Psychoanalysis
by Sigmund Freud
Descent of Man
by Charles Darwin
I am still trying to fully comprehend the anti-science mentality exhibited by many on the right-wing, especially given in this case that the science they decry has made so much possible, from understanding the origins of diseases (using the theory of evolution) to making the Internet possible (quantum mechanics, among other fields of study).
Logic is apparently not only optional but indeed discouraged in some ideological beliefs.