In recent years, polarized political ideas have thrived on social media. New forms of communication amplify the reverberation of extreme ideas in echo chamber environments. Studies in corpus linguistics show that messages that are more widely replicated in the media contain more emotional and imaginative words, and that viral news often features phrases that are simpler and easier to process. This phenomenon is examined in light of Freud’s analysis of mass effects in Group Psychology and the Analysis of the Ego. Second, we examine the status of “truth” on social media in relation to the Lacanian notion of the “not-all,” understood as a theoretical tool to make use of some version of “incompleteness” of truth that might play a role politically.