The anonymous internet. Everyone thinks that it's real, but that's only because the agencies responsible for tracking and learning everything about you pay news organizations to churn out fluff articles about the safe, faceless, friendly nature of the web.
Oh and 4chan. Which, by the way, one of said agencies not only founded, but initially populated with several of its "undercover" (is it really undercover if you don't have to put on any semblance of a disguise, just hunch before a screen?) agents in order to spur discussion and anchor the board's apparent predominant politics and beliefs within realms which would encourage other users that they could freely say absolutely anything on the Internet; that they had some inherent right to this purported freedom; and that they were safe from the eyes and their identification by the government.