Today Donald Trump poses a threat that many in Washington simply fail to grasp. He can move Americans to action based on total dishonesty. I can tell you from my time working to support democracy overseas that the power to rally a mob must never be underestimated. Nor should the fear that a mob can instill in people of reason. A person with that kind of power—to intimidate and threaten and motivate others to carry out violent acts—does not just slowly fade into the background. He must be defeated.

