On Tuesday of this week, 22 year-old Casey Brezik waited in the computer lab of Penn Valley Community College in Kansa City where Missouri governor, Jay Nixon, was scheduled to speak. At some point, as various dignitaries gathered outside the lab, an anxious Brezik, wearing black clothes and a bullet-proof vest, bolted out of the lab, knife in hand. Brezik approached Associate Vice Chancellor Tom Vansaghi, a youngish, dark-haired administrator, and said, “No, you’re not the one I want.” Brezik then ran past Vansaghi and lit on Al Dimmitt Jr., an older, graying dean, slashing his throat before being...