Cory Doctorow (Author, Journalist, Activist) gave a pretty good talk last December about the war on general purpose computation. A lot of the content leans towards copyright and intellectual property, a particular interest of Doctorow who has released a lot of his content with copyleft-eqsue licenses, and its overall impact on intersections between freedom and computing. There's mention of things like U-EFI and signed operating systems/approved code. It doesn't really talk about the police state beyond the scope of copyright, but I think it does well to hint at copyright as a gateway to things that would like to be achieved in the name of "security". http://boingboing.net/2011/12/27/the-coming-war-on-general-purp.html The website has a video and transcript available.