The society now can go in one of two directions. Either we will just accept periodic shooting sprees as one of those unfortunate things that must be lived with -- like, say, the periodic flooding and death that results from global climate change? If we go that route, even our sweetest, safest elementary schools will be turned into fortresses. The remnants of our open society will be turned into a surveillance society. We will solve our unemployment problem by hiring millions more armed guards. Alternatively, we can finally get serious about gun control. But the leadership has to come from the president. Barack Obama has a gift for moving public sentiment. If ever there were a moment to use it, on behalf on murdered first graders and others who might be spared, that moment is now.