To have strong, unwavering and articulatable Principles are feared by those who lack such things.
Economics in One Lesson is a book written in 1946, less than 10 years after Keynes wrote his The General Theory of Employment, Interest and Money. It covers subjects like "The Broken Window Fallacy," "The Curse of Machinery," Spreading the Work Around," "Public Works," Taxes, Credit, Inflation, Tariffs and many more subjects.
(No, "Kindergarden" in the title is not misspelled.)
The book Kindergarden of Evil grew out of a “policy wonk” speech given by the author at a Heritage Foundation gathering in 2007. This codification of Liberal behavior into 4 laws and 3 Corollaries was declared the “Unified Field Theory of Liberalism” by Andrew Breitbart. I have to enthusiastically agree. It made sense to me on almost every page.
The term "Bang" in the title means a violent event (explosion, ambush, active shooter, etc.). To stay "Left of Bang" means that you see that something is about to happen and you already have or are actively taking the steps to counter the threat, a very proactive method to violent incidents.