In 2005, Human Events published a list of the "Ten Most Harmful Books of the 19th and 20th Centuries:"[31]
The Communist Manifesto, by Karl Marx and Friedrich Engels
Mein Kampf, by Adolf Hitler
Quotations from Chairman Mao Zedong, by Mao Zedong
Kinsey Reports, by Alfred Kinsey
Democracy and Education, by John Dewey
Das Kapital, by Karl Marx
The Feminine Mystique, by Betty Friedan
The Course in Positive Philosophy, by Auguste Comte
Beyond Good and Evil, by Friedrich Nietzsche
General Theory of Employment, Interest and Money, by John Maynard Keynes
Being voted on by two or more of their judges, twenty additional books received "honorable mention", including The Origin of Species, by Charles Darwin; Unsafe at Any Speed, by Ralph Nader; and Silent Spring, by Rachel Carson.
I must confess "Das Kapital" was rough sledding. It definitely caused some cognitive damage. Fortunately, one of my friends had a ready supply of psychedelic meds to help me get through it. Hopefully General Milley hasn't opened his mind to any of these baleful influences.