A bit of an oldie now but, given the increasing rise in profiles of extremists of all ilks, "Them" provides a really interesting insight into the odd mentality of holders of some of the weirder political outlooks in the Western world.
From Omar Bakri to Alex Jones we see the odd dissonance (something I see in most "believers") between living ordinary lives with ordinary problems whilst holding onto beliefs that seem to oppose the very concept of living ordinary lives. If I truly believed in the New World Order I'd either try and keep my head down or give up my ordinary life and become a die-hard opponent. This "Having our cake and eating it" malarkey seems to fly in the face of their own beliefs, with their ability to live a normal life seemingly unimpeded by the evil NWO.
You also get to see a human side to these people that helps you remember that they aren't madmen or geniuses but just flawed people like the rest of us. They live "exciting" lives full of paranoia and faux intrigue, playing out fantasies like tricked out role players.
Oddly, given my line of work is fairly mundane, I speak to similarly paranoid people all the time. I spend a lot of time trying to convince them I'm not out to get them before they'll finally let me help them. And I regularly encounter people with extremely odd beliefs regarding conspiracies, aliens etc. I've come to believe these "extremists" are little more than just the tip of a large iceberg. Humans, in general, easily and readily give themselves over to crazy beliefs, easy (if elaborate) explanations for what are really rather mundane events and to a blinkered worldview that defends their viewpoints regardless of any counter evidence.
Skepticism has a long way to go in changing human behaviours for the better.