This is scary stuff, and it explains exactly how, against all odds, Donald Trump pulled off his shocking victory. It you think those cute little Facebook quizzes are innocuous, like "What Superhero are you?", you need to watch this movie. Left or Right, understand that all future candidates can use this data to undermine democracy. I credit the Trump campaign for a brilliant, if unseemly, use of targeted "fake news" aimed at a small group of neurotic, insecure conservatives. You owe it to yourself to watch this.