Paul Ryan had it exactly right. The politically-motivated Wednesday morning shooting at the Republican baseball practice in Alexandria gives us many mental pictures we’d like to erase, but also many images that have the power to inspire: the bravery of the first responders, the moment of shared humanity that led to a temporary shelving of partisan bile, and the determination to proceed with the Congressional Baseball game. Thousands will gather tonight at Nationals park for a game that will attract far more than its usual share of attention. Tonight, the game will be more than an evening of camaraderie; it...