This bit is particularly disingenuous: "The hippie, black and women’s movements of the 1960s would not have been so successful in challenging authority without the bookstores, which made their ideas widely available and sympathetic in a way that television, for instance, did not."
Seriously? I mean, really, seriously, you just wrote that on a technology (wait for it) BLOG? The analogous movements of today has unprecedented access to spreading their ideas through blogs and websites and social media and petition sites and collaboration services and who knows what else - most of it available instantly and almost or entirely free. I don't think that if the occupy/tea party/anonymous/truther/conspiracy/pick-your-revolution-of-week movements have struggled for five minutes to make their ideas available, it was because of the lack of bookstores.