I was admittedly curious about the premise printed in large bold letters on the cover: why does the Left hate America? To answer, Flynn brings to bear questionable scholarship and the expected one-sided argumentation which occurs in almost all partisan presentation. The core of the book is really two-fold: first, creating a straw-man of the Left as a monolithic, reprehensible group that purportedly holds views that Flynn avows as anti-American; and second, that America has many virtues worth celebrating. On the second, I found myself quite in agreement. The many contributions that American citizens have made to science and the arts, or that our government and society have provided to other nations and groups, are admirable, even if presented here strictly as a counterargument to the 'lies' attributed to the Left.
And what of those? First, it's important to note (which Flynn does himself, albeit quite late into the book) that the Left is not the same as politically liberally. The enemy in Flynn's eyes is the unrepentant American Communist who aligns with the party of Stalin. Naturally, that limits the target population somewhat. He also appends to this group (somewhat tenuously) all those in academia who have argued against the excesses of Eurocentrism, who justify 9/11 as 'well-deserved', and who generally view America and the 'West' as an oppressive force in history. He cites numerous non-contextual statements from protesters, professors, and students with outrageous and frankly upsetting absolute rejections of America as a positive entity. I certainly can't apologize for some of the described antics of protesters who have heckled and even attempted to ban or attack Flynn and his contemporaries during public speaking engagements. Such behavior goes strictly against the principle of open discourse and free speech. But from that vitriol we are presented with an aggregate group - Communist spies from the 1960s, anti-globalists, certain feminist theorists - lumped under the label Left and then painted in anti-American colors.
The book does succeed in championing America and its citizenry as having had a laudable history of accomplishments, and it does help explain how one could feel it was under attack from certain quarters. Yet the loaded language, logical inconsistency, and shifting scope ultimately diminish the central point made on the cover: sure, the Left hates America...if by Left you mean only conspirator Communist agents during the Cold War, and certain activist fringes.