Support for Trumpism, like support for Nazism, is built on a edifice of self-deception, as former GOP campaign guru Tim Miller’s new book makes clear — If you’ve ever wondered how so many professional Republicans, people who work in politics on a daily basis, have justified their support for Donald Trump and the larger miasma of manipulation, prejudice, lying, cruelty and incompetence that is Trumpism, make time for Tim Miller’s book Why We Did It.