A banned philosophy, a banned work, and a banned author. And I mean bannination with extreme prejudice. Even as a conservative -- or at least non-liberal -- I find the ethical constructs of Objectivism to be heinous. We could go on and on, but 1) rejection of altruism and 2) self-interest as a primary driver of everything are great places to start. I have been known to lift stray copies of Atlas Shrugged from their (public) places of abandonment and just toss em in a remote dumpster before some innocent mistakenly picks the thing up.