 24 hours has been one of the most unnerving in recent American history. Three years ago, the FBI director was warning that, quote, the amount of angry, hateful, unspeakable, combative, violent, even rhetoric on social media exceeds what anybody in their worst imagination thinks is out there. Well, this weekend, that rhetoric turned violent. And while we may not know the motive of the gunman, maybe this is an inflection point.