By Christopher Cook Friends, conservatives, countrymen,It's time to recognize a basic fact: We are in a civil war. It is obviously not the civil war of pitched battles and 600,000 dead. It is a low-grade—but omnipresent—political and social conflict, and though it is not an open war, it does involve violence.  Of course, only one side is fighting it as a war. The left sees every area of society as a battleground, and they will use any and every tactic at their disposal—including violence—to achieve their aims. This is, of course, nothing new, and before we can talk about...