In November 2013, 54-year-old Theodore Wafer was charged with second-degree murder, manslaughter, and possession of a firearm for fatally shooting 19-year-old Renisha McBride on the front porch of his suburban Detroit home. McBride, who had been drinking heavily and smoking pot that night, wound up at Wafer's door after wandering away from the scene of a late-night car accident several hours before. (Witnesses said she appeared "disoriented.") Prosecutors and McBride's family say she was clearly looking for help. Wafer said that he acted in self-defense, having taken the noise McBride was making outside for a sign that someone was trying...