First, the shootings in Minnesota and Baton Rouge, and the protests, then the targeting of police by the shooter here -- an act not just of demented violence but of racial hatred. All of it has left us wounded, and angry, and hurt. It's as if the deepest fault lines of our democracy have suddenly been exposed, perhaps even widened. And although we know that such divisions are not new -- though they have surely been worse in even the recent past -- that offers us little comfort.